Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

An exotic wildlife habitat right off The Strip.

A new kind of theme park for adults off the Las Vegas Strip.

Wayne Newton's sprawling estate is now open for visitors to catch a glimpse of his "heart and soul."

A hidden subterranean installation offers a view of the sky.

A meow-velous tribute to a beloved street cat, made famous on the internet.

Have tea in a cemetery with a dazzling view of Istanbul.

A set of seven houses, each built in a style that represents a European country.

The last of Amsterdam's original sea level markers remaining in place.

Amsterdam's former hotspot for public executions and dissections.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Sail in for a ’dam good slice.

The world's only museum devoted to the wonders of fluorescence.

Museum covers every step of the chocolate-making process, from cultivation to the finished product.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

A gender-bending antihero's grave, where lies the inspiration for both book and film.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

One of the deepest indoor swimming pools in the world.

Christ's blood preserved in a Belgian town.

Only museum in the world devoted to bookbinding and book arts holds a permanent collection representing five centuries.

Ethereal alien hums and haunting whale songs emitting from...a giant sheet of vibrating metal?

A delightful park featuring homemade scale replicas of dinosaurs, tucked away in the Tennessee mountains.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.