A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

With 8,000 pipes this giant instrument is the most versatile theatre pipe organ ever built.

A pocket of jungle amidst urban expansion in Panama.

Although it also features red, orange, and variegated cliffs of Navajo Sandstone, this state park is often overshadowed by its more famous neighbor.

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.

This old selenite mine is dotted with tiny crystals that make it shimmer like it's covered in glitter.

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

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

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

Irontown was founded in 1868, as a second attempt to mine iron from the nearby Iron Mountain.

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

A display of magnificent stained glass windows is the first exhibit of its kind.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

Enter the cabin of a life-sized Hindenburg replica.

Come for the flowers, stay for the bats!

This secret Australian garden was built on love after a man planted a random bulb he found in the ocean.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

Climb inside an iron crystal magnified 165 billion times its normal size.

A little sculpture with a large wardrobe.