Known for the tunnel that leads visitors to the water.

One of the world's steepest streets seems to have houses sliding down it.

A lakeside garden in the Southern Alps full of whimsical artwork and thousands of beautiful flowers.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

A perfect turquoise lake colored with glacier dust.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

One man's dream has turned into this naturally growing chapel made of almost nothing but trees.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Tubing through a cave lit with glowworms is a magical underground experience.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Journey through a collection of over 35,000 Halloween items from all generations.

An ode to filmmaker George A. Romero, who used the mall to film an iconic horror movie.

One Pittsburgh musician's decades-in-the-making memorabilia collection is on display at this rock-n-roll curio shop.

Locals call this magical moss-covered walkway the "Emerald Path."

A rock maze opens up to a panoramic viewpoint at an abandoned mine full of ghost stories.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

The residents of this ominous-sounding street in Pennsylvania liked its name so much they fought to keep it.

A diorama of the Civil War, fought by cats.

Memorializing an American tragedy of massive proportions.

This giant disembodied horse head seems to balance impossibly on its nose.

Where the oil industry began.

Where the "World Pinball Champion” is crowned.