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CodexMira
DeepEarlyNeolithicBronze AgeIron Age and ClassicalMedievalEarlyModern

Montecitorio Obelisk

Obelisk and Pillar

Description

Montecitorio Obelisk is an obelisk and pillar in Italy, Europe. UNESCO World Heritage List: Historic Centre of Rome gives its chronology as “Psamtik II, c. 590 BCE; Rome 10 BCE.” Its listed material is Granite. Its height is listed as 21.8 m (estimated). Pliny the Elder, Natural History also records: “Used by Augustus as the gnomon of a monumental sundial.”

Brought to Rome by Augustus to serve as the pointer of a giant sundial.

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Guide answers and timeline insights related to this Wonder.

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Iron Age and Classical — Montecitorio Obelisk in context.

Iron Age and Classical, 1,200 BCE to 500 CEDates supported by mainstream archaeology. Natural formations remain undated.Timeline182282222444310264112911622913713613668191,000 BCE500 BCE0 CE
Height21.8mConfidence: estimated
MaterialGraniteMohs 6-7 (mineral hardness scale)
QuarryAswan granite quarries (2734.5km)calculated straight-line

Claims

Compare the published evidence and its interpretations. “Consensus” records the mainstream account; “Alternative” identifies a competing interpretation, not an equally established conclusion. Estimates and unresolved questions remain qualified in the claim text.

FieldConsensusAlternative
Date

595 BCE - 589 BCE

Psamtik II, c. 590 BCE; Rome 10 BCE

UNESCO World Heritage List: Historic Centre of Rome
No claims found.
Purpose

Sundial gnomon

UNESCO World Heritage List: Historic Centre of Rome
No claims found.
MethodNo claims found.No claims found.

Precision & Alignment

consensusAlignment

Used by Augustus as the gnomon of a monumental sundial

Pliny the Elder, Natural History
Sources: Pliny the Elder, Natural History • UNESCO World Heritage List: Historic Centre of Rome

Calculating elapsed time...

Approximate - counted from January 1, 592 BCE (UTC). Based on the midpoint of 595 BCE - 589 BCE; the underlying date is uncertain.

Separate totals since January 1, 592 BCE (UTC)
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