One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

The first home and studio that belonged to the famous architect.

These oddly shaped pink granite formations got their name after being mistaken for massive piles of hay.

This building is a recreation of the gatehouse that separated Los Alamos from the outside world during the era of the Manhattan Project.

A large circus museum with summer performances.

After an Illinois church was struck by lightning and burned down, Frank Lloyd Wright designed this replacement.

The arch marks the beginning of the road for northbound travelers.

This chimerical bridge/tunnel appears to dead end right into the sea.

Swedish skyscraper with a 90° twist.

Model Trains and Much More in Hamburg.

A peculiar trapezoidal building covered with wonderful humorous reliefs.

This cheeky statue of a man defecating gold coins graces the facade of a medieval guildhall.

Art historians have debated the identity of this medieval stone rider since the 19th century.

This historic toy museum brings a little whimsy to a city not usually remembered for such things.

This riverside restaurant has been serving customers since 1146.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

The world's first combination ski slope and power plant.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.