Some say this medieval church is where the poet Dante married his wife and also met the love of his life.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Jesus' footprints and the first catacombs in the world.

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

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Architectural monsters are devouring this palace's every door and window.

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

A fairy tale castle in modern Rome.

Architectureal fantasy quarter of Rome.

This striking art museum holds an amazing series of curiosity cabinets.

A sculpture of a salmon swimming through a brick building.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

It was once the base for a series of domestic terror attacks.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.