An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

A beautiful oddities shop crammed with strange and morbid curiosities.

A rare wooden coffin set vertically into the Gothic arch of an ruined church.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.

It took 82 years and four different plaques to finally get the story right.

The London statue that imitates passersby.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

A musical composition 1000 years in length plays at the Trinity Buoy Wharf in London.

The television series' iconic giant foot was borrowed from this classical painting.

Rebuilt remains of a temple to Roman god Mithras.

A town church once nearly submerged by the damming of a river is now hauntingly visible as the water recedes.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

The 1,000-year-old abbey is the birthplace of modern musical notation.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

Stretching almost 2,000 feet, this painting is one of the longest pieces of Buddhist artwork in the world.

The avant-garde design was able to bypass strict Soviet regulations on architecture.

The island residents are known for taking their quirky sense of humor with them to the grave.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

One of the world's largest pianos is displayed in the workshop of the man who built it as a teenager.

One English town's celebratory landmark spurred more trouble than anticipated.