More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

One of seven Jewish catacombs in Rome and one of only two open to the public.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

A spectacular cave and a beguiling lake.

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

A magical museum of fairy tale treasures near Cyprus' buffer zone.

This museum in a shuttered train station remembers the island's forgotten rail system.

Museum about life, death, and cannibalism in the Stone Age.

The fantastic charm of England's oldest botanical garden has made it a place of writerly inspiration for centuries.