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

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

The final resting place of the great navigator, or maybe his brother.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

A bright little alley in La Boca is a part of tango history.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

Former hunting lodge of a duke who was an avid collector of impressionist works.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

The fairy tale castle of the "fairy-tale king."

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

The tennis legend used this racket while breaking the race barrier and becoming the first Black man to win the US Open.

Mysterious stone tower featured in many alternative histories of the New World.

The world's only flying boat museum honors a small Irish village that sent 20th-century aviation to new heights.

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

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

This old-fashioned roadhouse's quirky neon sign is as famous as its enormous dumplings.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

A cave in southern Italy adorned with thousand-year-old Biblical frescoes existed in obscurity until fairly recently.