An underwater restaurant, surrounded by a coral reef.

Underwater restaurant at the coral reefs of Eilat.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

Willy Wonka would love this weird half-a-home.

When this funny little building went up in the 19th century, most people thought it would simply fall over.

There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

In the hinterlands of Serbia's capital, a giant reflective mushroom houses an aeronautical history of the former Yugoslav republic.

A cheeky architectural easter egg.

The site of the climactic scene from the classic horror film is now a historic landmark.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

This tiny man looms large over downtown Charleston.

A public display of random paleontology.

A luxury hotel housed in a former 15th century Gothic church.

A whimsical art tower at a Bavarian brewery includes a grotto for its mythical beer-brewing dwarves.

Inside this small brick bungalow is a collection of toys intended for the afterlife.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

A real-life Professor Snape once taught in this Welsh university building, which students of course nicknamed “Hogwarts.”

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.