The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

Order a boozy baba au rhum at the oldest patisserie in Paris.

A tribute shrine where the Space Invasion street art movement started.

A subterranean shelter remains intact under a busy Paris railway station.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

The man who introduced reinforced concrete to the world demonstrated its genius by using it to build his own house.

Experience architect Le Corbusier's modernist design for living in the home he designed for himself.

Architect Le Corbusier built his friend a cubist house to match his impressive collection of cubist art.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

Paris' linguistic guide to the international language of, yes, love.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

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

This mural painted by Keith Haring was done without payment as a gift to entertain the children at the Hôpital Necker.

One of Jeff Koons’s largest sculptures and his first commemorative work.

This western-themed amusement park is host to a large number of decaying animatronic cowboys.

A small Japanese village claims to be the final resting place of the son of God (and God's other son's ear).

A sobering scientific reminder of the human damage caused by the advent of the nuclear age.

A remarkable lava formation encloses a line of Buddhist statues that can't be accurately counted, according to local mythology.

This German "living museum" is maybe a bit too immersive.

Oberweissbacher Bergbahn - a broad-gauged cable car capable transfering railcars.

A Neolithic celestial calendar standing in a nondescript wheat field.

An homage to the medieval rulers of Bulgaria.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.