This Las Vegas casino boasts one of only three spiral escalators in the United States—an engineering wonder.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

The largest recovered section of Titanic sits in a hotel in Las Vegas.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

“Live hard, ride fast, eat pizza” at this joint filled with Evel Knievel memorabilia.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

When the water level in the Danube in central Budapest is low enough, there is a secret site telling the history of one of the most iconic bridges of the city.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

A tunnel with windows, so you don't miss out on the impressive views.

This museum houses an imposing skeleton army comprised of creatures great and small.