The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The ancient tomb acts as a calendar that keeps perfect time.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

This single room has survived the centuries with almost no deterioration.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

Local legend says the remains of Father Christmas lie within the medieval grounds.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

The highest bridge in America was built for an almost unnervingly small amount of money.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

There aren't too many operational funiculars around, but Pittsburgh has two!

The largest ancient burial mound in Ohio.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

A singular collection of hand-built art deco cars are held in a building with style to match.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

Detroit’s downtown castle is one of the oldest structures in the city.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district

A treasure trove of rare and fine fabrics from around the world.

Astounding collection of coin-operated games and automata.

The only surviving prototype for Buckminster Fuller's house of the future.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

Trade in that pesky human soul for cold-hard circuits.