This amazingly preserved Doric temple was abandoned before it was ever completed.

Centuries ago, red and white wine poured from the statue's breasts whenever a new Venetian ruler was elected.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

The bright red cars take travelers through breathtaking Tuscan scenery.

The only museum with its curator—and her pets—buried inside.

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

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

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

A medieval fountain lined with 99 unique stone faces whose origins and meaning remain unknown.

142 ceramic steps become a mosaic once a year.

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

Water and windows define this defensive Italian well.

This breathtaking monastery was established by Saint Benedict himself 1,500 years ago.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

Where Venice's gondolas go for a tune-up.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

This is the oldest Roman-made bridge in the city still existing in its original state.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

Geometry and mystery come together in an epic show of octagonal masonry.

This curious, round temple is the oldest still-standing marble building in Rome.