Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

Erotic art covers the walls of the largest ancient pleasure palace.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

A Nesting Doll of Churches.

The final resting place of the poets Shelley and Keats.

Go inside to really appreciate this 500-year-old technological masterpiece.

Pilgrimage site for star-crossed lovers.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Pompeii's less famous neighbor is still revealing her secrets.

Thousands of well-dressed mummies below a monastery.

A 16th-century horror show built in a lovely Italian garden.