The vast, legendary catacombs hold secrets much stranger than stacked bones.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

Gargantuan home of Russian science.

One of the world's tallest statues is also one of its most hated.

The tallest hotel in Europe.

World's largest bell sits on the grounds of the Kremlin in Moscow.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

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

A massive marble foot is tucked away in a small alley near the Pantheon.

The middle finger of modernity.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

One of the world's first dedicated bank buildings in the world is now the oldest one.

Stockholm's tiniest statue is of a small boy looking at the Moon.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

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

This floating sculpture of ice is a poignant reminder of nature's power.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."