This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

A 131-year-old wunderkammer of Texas history.

The palatial McDonald's that inspired Wesley Willis.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Theater has had many different incarnations but has survived the ravages of time.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

This former power station is now a museum dedicated to the region's coal-producing history.

A monument with a strange legend involving a horse's tongue.

Hundreds of years ago, this lion-shaped door knocker could help a person accused of a crime find temporary safe haven in Durham Cathedral.

This enormous censer uses a pulley system installed over 400 years ago.

This stop on the Camino de Santiago stands high above the underwater ruins of a medieval town.

Relive a Polish uprising via an enormous, century-old cyclorama.

The silly symbol for an underground protest group is now scattered around the city.

A striking public sculpture representing the period of martial law in Communist Poland.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

This antique thermometer honors the creator of the first universal temperature scale.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.