These cascading falls resonate throughout the Bulgarian forest.

Crossing a suspension bridge above a forest is the only way to reach this 12th-century monastery.

These natural cliffs look like they are a part of an old castle complex.

A magnificent, glittering building tucked into a tiny Bulgarian mountain town.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

This candy shop has been serving up sweets to the Louisville area since the 1850s.

Symbolic attempt to overcome the issues of life.

The longest navigable underground river in the United States is home to countless blind and albino animals.

The cliff and rock formations are made out of Sioux Quartzite.

Chef Lawrence West serves up Indian tacos, wojapi, and other Lakota dishes at the brick-and-mortar incarnation of his popular food truck.

This massive mushroom has spent centuries eating its way across a huge swath of Oregon.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

The world's last remaining store of its kind.

This natural marble cave is one of only five national monuments in Oregon.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

Instead of fruit, the branches of this tree are brimming with hopes and dreams.

A massive sea stack famous for its appearance in The Goonies.

Only known mainland rookery of the threatened Stellar sea lion.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.