Climb to the top of its spiral spire for spectacular views of Copenhagen.

This classic steam-powered train takes tourists on a nostalgic trip around the Connecticut River Valley.

The world's first ice hotel is still one of the most elaborate and beautiful.

The show's fictional Korean medical camp was created in the Santa Monica hills.

The poems Nathaniel Hawthorne and his wife Sophia etched into its windows are still visible today.

Its collection includes a broad array of social, geographic, graphic design, and political history.

A king's bloodstained shirt is among the gruesome collection of artifacts displayed below Stockholm's Royal Palace.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Monasteries on rock pillars, once accessible only by frayed ropes.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

A striking symbol of the Bulgarian capital.

The legendary luxury train passage is commemorated with a charming museum inside its former eastern terminus.

A fountain standing as a testament to a doomed alliance.

Large miniature theme park with 100-plus models.

A marvel of Byzantine engineering under the streets of Istanbul.

These unusual rooms on wheels are holdovers from the 1960s.

A wall within the institution displays the names of 13,000 Jews who took refuge in the city during World War II.

The ancient settlement attracts tourists from all over looking to learn about the Chinese vision of the afterlife.

Why walk on this historical site when you can zoom down instead?

The most famous location in China was home to whole dynasties worth of imperial rulers.

17th century mosque for Shah Abbas' harem.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.