Hadrian's mausoleum turned papal fortress — secret corridors, panoramic terraces, and two thousand years of reinvention.
Explore → Get Early AccessA building with four lives — imperial tomb, papal fortress, Renaissance apartment, prison — stacked in one drum on the Tiber, with the city's best bridge in front and a terrace view Puccini put in an opera.
Hadrian built it as his mausoleum (139 AD); a fortified corridor from the Vatican — the Passetto — let popes flee here, most famously Clement VII during the 1527 Sack while his Swiss Guard died buying time.
Tosca leaps to her death from this terrace in Puccini's finale. The angel on top commemorates a plague-ending vision from 590 AD — the current bronze is the sixth angel; a marble predecessor stands wounded in the courtyard.
The empire's greatest stadium — 250,000 Romans once roared here at chariot races; today it's a…
The world's first covered shopping complex — a multi-level marvel of Roman engineering above the imperial…
The World's Largest Church & Heart of Catholicism
Heart of Ancient Rome's Political & Social Life
135 steps of 18th-century theater connecting Piazza di Spagna to Trinità dei Monti — Rome's grandest…
Skip the Lines at Rome's Most Iconic Ancient Wonder
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