This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

The former home of the 11th president of the United States.

This replica of the Greek structure is in the heart of Nashville.

This former coal gasification plant found a curious second life as a popular public park.

A wall of chewing gum moonlights as collective art.

Stones speckled along Harris Avenue reveal hidden nuggets of the past.

The cardinal directions, set in stone.

An electrifying collection of gadgets and literature from the 16th through 20th centuries.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.

One of Europe's oldest libraries.

The stoic structure boasts a whimsical set of stained glass art commemorating Lewis Carroll.

Depending on the region's rainfall, this church may be partially submerged.

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

A crumbling cathedral condemned by an earthquake.

Known as one of the most famous parks in Honduras.

One of the world’s most colorful cemeteries, where each pigment is symbolic.

A legendary tree towers within its own vibrant sanctuary.

Qatar's oldest market can trace its origins back more than a century.

The building is a gigantic piece of art inspired by the shape of a desert rose.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The home of the Dead Sea Scrolls is an abstract modernist dream.

Hundreds of intricately carved Armenian stone crosses can be found within this huge cemetery.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.