Jerusalem Explored, Volume 1—Text: Being a Description of the Ancient and Modern City, with Numerous Illustrations Consisting of Views, Ground Plans and Sections

In Short

Ermete Pierotti’s work is a rigorous top-down surveying project that bridges the gap between historical literature and physical archaeology in mid-nineteenth-century Jerusalem. Serving as civil and military architect-engineer to Surraya Pasha, the Ottoman governor of the city, Pierotti utilizes his rare, privileged access to restricted holy sites to systematically map the city's terrain, subterranean systems, and architectural monuments. The text evaluates biblical accounts, classical histories like those of Josephus, and medieval pilgrim itineraries against actual masonry, foundational footings, and drainage networks uncovered through direct excavation. Rather than offering a mere travelogue, Pierotti delivers a precise forensic analysis of Jerusalem's built environment across its Canaanite, Jewish, Roman, Byzantine, Crusader, and Islamic epochs. His documentation has endured as a primary baseline for modern Biblical archaeology and Levant geography because it captures the structural state of Jerusalem right before the advent of major international archaeological expeditions.

The Story

The intellectual arc of the work moves systematically from spatial geography and municipal governance to deep historical stratigraphy, tracing how human design and political conquest shaped the physical landscape of Jerusalem. Pierotti begins by establishing the city's modern administrative and demographic context. He surveys the distinct quarters inhabited by the local populace, documenting the social institutions, religious leadership, and daily lives of the Jewish, Christian, and Mohammedan communities. He notes the delicate balance maintained by the local government, highlighting how economic reliance on incoming pilgrims and firm leadership under Surraya Pasha prevent sectarian violence from erupting during times of regional crises elsewhere in the Levant.

From these present-day urban conditions, Pierotti pivots to the fundamental structural skeleton of Jerusalem: its defensive walls, topographical elevations, and water management systems. Moving through the historical phases recorded in the Hebrew Bible and classical texts, he traces the architectural additions made by Judean kings such as Jotham, Hezekiah, and Manasseh. Pierotti does not merely cite these historical texts; he actively tests them against physical evidence. By excavating near key locations like Ophel, the Pool of Hezekiah, and the ancient city gates, he uncovers massive courses of stone bound by iron clamps, identifying where ancient defensive circuits once stood and establishing the northernmost limits of the ancient city.

The narrative arc reaches its focal point as Pierotti investigates the great religious centers: Mount Moriah, the Haram es-Sherîf (the Temple Mount), and the Holy Sepulchre. Leveraging his official capacity, he gains entry to restricted sacred enclosures and undertakes extensive underground investigations. At the Haram es-Sherîf, he explores the ancient platform, examining the transition from Solomonic foundations to Herodian rusticated masonry, and later Crusader and Saracenic alterations within buildings like the Dome of the Rock and the Mosque el-Aksa. His structural inquiries dive deep into the earth: he descends into ancient cisterns, maps the vast channels beneath Araunah's threshing-floor, and traces subterranean water conduits to explain how ancient ritual blood and waste were flushed from the Temple grounds down toward the Kidron Valley and the Fountain of the Virgin.

Moving westward to the Church of the Holy Sepulchre, Pierotti evaluates the validity of traditional Christian holy sites. He subjects the site to architectural analysis, examining the geometry of the surrounding rock, the tool marks in adjacent rock-cut tombs—such as those attributed to Joseph of Arimathea—and the structural relationship between the rotunda, the central shrine, and the nearby Crusader ruins of S. Mary the Great and the Hospital of S. John. He extends this forensic approach outside the city walls, traversing the Mount of Olives, the village of Bethany, the Valley of Jehoshaphat, and the deep well of Bir Eyub (En-rogel).

In the final sections, Pierotti compiles detailed structural notes, architectural elevations, and historical correlations. He weaves together classical citations from Josephus and early Christian pilgrim accounts (such as those of Sæwulf and the Pilgrim of Bordeaux) with his personal measurements of ancient tombs, including the Tombs of the Kings, the Tombs of the Judges, and the Royal Caverns. The work concludes by synthesizing these physical discoveries into a comprehensive blueprint of Jerusalem’s evolution, offering a clear layout of the city's ancient contours, its historic sieges, and its continuous rebuilding across millennia.

How It Unfolds

The urban overview Pierotti details the contemporary population, civil administration, and social institutions of Jerusalem, noting the fragile peace maintained between the religious communities under Ottoman rule. He describes the quarters of the city, the municipal sanitation challenges, and the unique status of specialized groups like the lepers near the Sion gate.

Unearthing the city walls Through target excavations and physical inspections, Pierotti traces the ancient lines of fortification built by Biblical kings like Hezekiah and Manasseh. He locates ancient wall foundations fastened with iron clamps and verifies historical boundary lines against the topographies recorded by Josephus.

Investigating Mount Moriah The author examines the massive masonry of the Haram es-Sherîf, identifying Solomonic and Herodian stone courses at the angles of the enclosure wall. He details how later Roman, Byzantine, Crusader, and Saracenic builders adapted the sacred site over time.

Exploring subterranean conduits Pierotti gains access to the underground networks of the Temple Mount, crawling through narrow channels and descending into deep cisterns. He maps the flow of ancient water systems designed to carry off sacrificial refuse toward the Fountain of the Virgin and the Kidron Valley.

Analyzing the Holy Sepulchre Turning to Christian antiquities, Pierotti examines the structural layout of the Church of the Holy Sepulchre and the nearby Chapel of Calvary. He checks the local geology, measuring rock-cut tombs to test traditional claims regarding the burial sites of Joseph of Arimathea and early Christian traditions.

Surveying Crusader remains The author charts the extensive medieval ruins surrounding the Holy Sepulchre, including the hospital complex of Raymond of Puy and the Church of S. Mary the Great. He uncovers buried columns and structural foundations while evaluating the architectural styles of Crusader and Byzantine additions.

Mapping out-of-city tombs and wells Leaving the inner city, Pierotti explores the surrounding valleys, descending into the deep well of Bir Eyub during a dry spell and measuring ancient rock-hewn burial chambers at the Tombs of the Judges and the Royal Caverns. He concludes by correlating these physical measurements with historical records to establish a permanent record of the city's ancient topography.

The People

Ermete Pierotti The author, an Italian doctor of mathematics and architect-engineer serving as civil and military engineer to the Ottoman governor. He seeks to map and measure every accessible structure, conduit, and ancient wall in Jerusalem to settle long-standing historical and topographical debates. Equipped with surveyor's tools, ropes, and local permits, he braves dark caverns, fetid mud, and local hostility to establish empirical facts through direct physical measurement.

Surraya Pasha The Ottoman Governor of Jerusalem during Pierotti's residency. An active and firm administrator, he aims to maintain public order, modernize municipal services, and prevent religious rioting during volatile political moments in the region. His authority and personal protection provide Pierotti with the rare access needed to examine restricted Muslim holy sites and conduct structural excavations across the city.

The Local Fellahîn and Workmanship Assistants The local Arab laborers, grave-diggers, and keepers of sacred sites whose labor Pierotti hires to clear rubble and excavate deep trenches. Driven by wage payments but constrained by fear of local suspicions, religious taboos, and physical fatigue, they serve as the physical workforce that enables Pierotti to uncover buried walls and subterranean water channels.

The Christian Sects and Monastic Keepers The Latin, Greek, Armenian, and Syrian monks who maintain the shrines within the Church of the Holy Sepulchre and surrounding convents. Mindful of traditional privileges, firmans, and rights over sacred ground, they frequently challenge or hinder attempts by outsiders to measure, map, or alter the structures under their care.

In Its Own Voice

"I myself found a fragment of the massive ancient wall, when superintending the laying of the foundations of the little mosque, dedicated to Omar, which is opposite to the Church of the Resurrection on the south: the masonry was composed of large blocks of stone, of a tolerably regular form, which were fastened together by iron clamps: and the thickness of the wall was about seven feet and a half."

Pierotti describes his hands-on discovery of ancient fortification lines while supervising municipal construction near the Holy Sepulchre.

"In the month of October, 1858, Bir Eyub was perfectly dry, and I availed myself of this event, unfortunate for Jerusalem, to descend into it."

The author explains how he took advantage of an extreme drought to climb to the bottom of the historic 108-foot deep well of En-rogel to examine its ancient masonry and bedrock springs.

"Besides this, it was no rare thing for me to arrange with the superintendent of the Haram to begin a work, and then have to wait several months before I could finish it, simply owing to the whim of a Mohammedan."

In a personal note, Pierotti highlights the persistent administrative delays and diplomatic patience required to carry out architectural surveys inside the sacred Muslim enclosure.

What It's Really About

Beneath its meticulous architectural measurements and detailed survey notes, Jerusalem Explored is a study of the tension between sacred tradition and empirical evidence. Pierotti approaches Jerusalem not as a reverent pilgrim seeking devotional reassurance, but as a trained engineer determined to test historical texts against physical stone. He constantly measures local traditions against the reality of rock formations, tool marks, and subterranean hydraulics, distinguishing genuine archaeological features from pious legends that lack structural support.

The book also addresses the continuous architectural recycling that defines Jerusalem's history. Pierotti documents how successive empires—Jewish, Roman, Byzantine, Arab, Crusader, and Ottoman—did not merely destroy their predecessors' work, but built directly upon and with it. Classical columns are embedded into medieval pool linings, ancient Jewish foundation blocks anchor Ottoman walls, and Christian basilicas are adapted into Islamic shrines.

Finally, the work reveals the complex geopolitical reality of mid-nineteenth-century Jerusalem. It showcases a city where religious custody over physical space is fiercely contested, requiring firm Ottoman authority to preserve the peace, while Western researchers rely on imperial patronage and local influence to uncover the buried past.

Why Read It Today

Jerusalem Explored remains a fascinating read for anyone drawn to Biblical archaeology, historical geography, and the physical reality of the Holy Land. Unlike generic nineteenth-century travel narratives that focus on personal impressions or romantic descriptions, Pierotti’s account provides hard data: exact measurements, precise architectural descriptions, and direct reports from underground explorations. Readers who appreciate forensic investigation will enjoy following Pierotti as he crawls through ancient drainage channels, examines the lead clamps of ancient masonry, or calculates whether a specific rock platform could physically hold three crosses as described in medieval traditions.

The primary challenge of the text lies in its highly technical focus and dense historical references. Pierotti writes as an engineer and topographer, peppering his chapters with precise measurements, architectural terminology, and long citations from classical texts like Josephus, Biblical passages, and medieval Latin itineraries. Modern readers must navigate these extensive references and footnotes, as well as the mid-nineteenth-century transliterations of Arabic and Hebrew place names.

What lingers long after reading is the vivid sense of physical discovery under demanding conditions. Pierotti captures the claustrophobic reality of early archaeology—descending into mud-filled vaults tied to a rope, bribing local gravediggers to go two feet deeper before a funeral arrives, and quietly measuring sacred floors under the watchful eyes of suspicious guardians. It offers a rare, clear snapshot of Jerusalem right on the cusp of the modern era, capturing the ancient city's stones before modern reconstruction altered its historic fabric forever.