5 Incredible Roman Ruins (that can't be excavated)

TL;DR

Five remarkable buried Roman structures — from Antioch to Rome — that will likely never be excavated due to modern development built directly above them.

Key Points

• 1.Constantine's Golden Octagon cathedral in Antioch lies up to 40 feet underground. The richly gilded octagonal domed church, described by Eusebius as adorned with gold and bronze, was destroyed by earthquakes and now sits beneath modern Antakya, Turkey, with virtually no excavation possible.
• 2.Alexandria's Caesareum temple to Julius Caesar is buried under a hotel. Surrounded by libraries, banqueting halls, and flanked by two 200-ton obelisks (now Cleopatra's Needles in London and New York), its foundations were briefly glimpsed in the 19th century before being built over — Hotel Metropole guests now sleep above the ruins.
• 3.Constantinople's Great Palace Daphne section and its mechanical throne room remain unexcavated. The sprawling Byzantine complex included the Golden Hall (a domed octagon with a gilded table) and the Magnaura, home to the emperors' steam-powered mechanical throne, all still buried beneath Istanbul's Sultanahmet district.
• 4.The Baths of Nero near the Pantheon are hidden beneath modern Rome despite their legendary opulence. Their spolia survive as three 40-foot Egyptian granite columns on the Pantheon's portico (replaced in 1666), two nearby columns, and the Fontana del Senato's granite basin — but the baths themselves have been covered since the Renaissance.
• 5.Lucullus's villa on the Pincian Hill hosted banquets costing 50,000 denarii when most families earned 200–300 annually. The terraced gardens and multiple dining rooms, including the famous Apollo Room, lie almost entirely beneath modern Rome's streets, with only a few basement rooms preserved — the villa was built over after the 16th century.