Pompey's Pillar

Pompey's Pillar is a 25-meter red Aswan granite column erected in 297 CE on Alexandria's ancient acropolis to honor Roman Emperor Diocletian after he lifted a siege on the rebellious city -- not Pompey, whose name was mistakenly attached by later medieval visitors. The column, one of the largest ancient monoliths outside Rome, is the last standing structure of the Serapeum of Alexandria, a temple to the god Serapis that once housed a subsidiary collection of the Great Library of Alexandria. Excavations around the base in the Karmouz district have uncovered subterranean galleries, cisterns, and fragments of the Serapeum's temple precinct, along with two Ptolemaic-era pink granite sphinxes flanking the pillar and a small group of Pharaonic-era statues relocated from elsewhere in Egypt and reused as building material. Little of the original temple superstructure survives above ground; most surviving fabric is foundational stonework and the column itself, which stands on a base incorporating reused Pharaonic blocks and inscriptions. The elevated platform gives views over the surrounding Karmouz district, and the underground galleries remain under conservation management by Egypt's Ministry of Antiquities.