This once-derelict building is now one of the most beautiful bookstores in the world.

Home to more than 13,000 pieces of war memorabilia and military equipment.

This ancient Corinthian helmet is South Korea’s only national treasure of Western origin.

This striking landscape in northern Vietnam contains both geological and archaeological wonders.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

Once the home of a hermetic monk, this cave now houses a small church.

Something's watching you.

An abandoned football stadium with a tragic past.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

The largest Buddha statue in the Western Hemisphere is just 50 miles north of NYC.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

One of only two commuter aerial tramways in the United States.

A tunnel of hardened lava along Maui’s famous Road to Hana.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

This Costa Rican topiary park is a surreal garden of unearthly delights.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

Sniff the Titan Arum's rotting flesh.

A crumbling hospital from the 1850s on Roosevelt Island.