A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Of all the houses that grace this neighborhood, only one is a testament to surreal architecture.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A sculpture of a salmon swimming through a brick building.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

Ever needed a chocolate-filled crepe in the wee hours of the morning?

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

A house carved into a rock in the 1940s.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

One family's environment-friendly hobbit-house in Wales.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

This "common-as-dirt" museum celebrates the glory of normalcy.

A trio of giant wooden megaphones turn up nature's volume in this Estonian forest.

Before online banking and smartphone apps, there was "commuter banking" in the subway in Downtown Brooklyn.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

This unique temple complex remains off the typical tourist trail.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A flight of this "ghost staircase" has 40 steps on the way up, but only 39 steps on the way down.