The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

The hallucinogenic center of the ancient world.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

The real-life site of Ichabod Crane's infamous gourd attack.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

The site of many tense prisoner exchanges across the Military Demarcation Line between North and South Korea.

A large visitor's complex and place of remembrance on the outskirts of the DMZ.

An optical illusion found amid a logged redwood forest.

This massive redwood tree has a hole in the base big enough to drive through.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

What remains of the summer palace of King Kamehameha III.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

Famously misunderstood wonder of the ancient world

A crumbling wizard is one of the final reminders of a roadside Middle Earth.