An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

The first Catholic church in Singapore is a Neo-Gothic colossus with a rich architectural history.

Colorful umbrella-covered trees in Singapore's Little India look straight out of Dr. Seuss.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

It houses the remains of a 17th-century version of the Titanic.

This enormous storm barrier is one of the largest moving structures on Earth, with each arm taller than the Washington Monument.

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

Something's missing between the arcades of the Palazzo della Ragione in "the city of the three withouts."

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Da Vinci's equestrian statue, 500 years in the making.

The oldest botanical garden in the world that technically isn't the oldest.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

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

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

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

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

Ancient snack bar of the Roman Empire re-opened.

The world's most active stratovolcano is almost always erupting.

A Nesting Doll of Churches.

2300-year-old Roman road connecting the empire.