This Australian beach is composed of tiny shells.

One of Australia's largest secondhand bookstores.

A clear example of the process of erosion in action.

One of the best beaches in the entire world.

Prehistoric park filled with the fossils of dozens of extinct species including Australian megafauna.

A sparkling sandstone cliffside that's worth a visit while it still exists.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

A small, but award-winning beach known for its literally spotless reputation.

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

Australia's largest traditional hedge maze features a Great Gnome Hunt.

The only pollutant in the clear blue water is sunscreen.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

Take a ride back in time with a steam locomotive trip through Eritrea’s mountainous countryside.

A kaleidoscopic warehouse-maze of handmade neon signs.

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

An antique store houses the last operational diner from the defunct department store chain.

A small flooded ghost town with a few scattered structures remaining.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

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.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.