The first bridge observation tower in the U.S. offers one of the best views of Maine.

This 19th century granite fortification is one of the most well preserved forts in New England.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Hear the quietest sound from across the dome.

A licentious look into Singapore's past, full of disorderly bric-a-brac and disreputable characters.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Climb to the top of the world's largest seated bronze Buddha.

A marvel of Byzantine engineering under the streets of Istanbul.

The fairy tale castle of the "fairy-tale king."

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

Former laboratory of radical psychiatrist Wilhelm Reich.

Impossibly life-like natural history models created out of glass by a father and son.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

America's oldest archaeological site or a muddled case of wishful thinking.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

Stumps of an Ice Age forest, visible only at low tide.