Ancient barriers wrap around what was once an important stop along the Silk Road.

The official meeting point for the oddly named governing assembly of ancient Sweden.

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

A uniquely lettered street sign marks the corner where the iconic word game was invented.

The unusual burial monument of Arizona's first governor.

This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence.

This downtown Dallas art installation is always on the lookout.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

Dr Barnes' $25 billion private collection of art and arboretum.

Yo, Adrian!

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

This dizzying span over the ancient Algerian city was once the highest suspension bridge in the world.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

This spectacular mosque houses the second-largest chandelier in the world.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

Hundreds of hidden passageways weave through the old quarters of Lyon.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

The largest market in Guyana, designed and built by the Edge Moor Iron Company of Delaware.

A patchwork of ruins from various civilizations in one of the world's oldest continually inhabited cities.