The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

An abandoned church gets a second life as a massive beer hall and event space.

This free, take-a-book shop seems like a trick but isn't.

The trials and tribulations of marking Poe's grave.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

Originally a leper colony, the island is now an Armenian monastery that's home to an incredible manuscript library and eclectic museum.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

Venice's island of the dead.

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

A modest museum in the final home of Italian poet and father of modern Italian, Francesco Petrarca.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.