Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

The tallest waterfall in West Virginia.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A herd of roughly 250 American bison roam these plains.

Display that gathers the basic elements of the universe in one convenient location.

Tucked away in the forests of Indiana resides an abandoned waterslide that is now a popular graffiti haunt.

Nature and art meet in this curvy creation

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

A medical facility that has been kept frozen in time.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

A Memphis park where you can walk the whole Mississippi River in one go.

Faces carved into the cliffs create an otherworldly walking trail.

The largest earthwork effigy in the world.

He’s not from around here.

Thousands of unique minerals, including some of the most impressive fluorite crystals in the world.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

Outstanding collection of 19th century medical instruments includes a life-size figure cast from as many as 200 cadavers.

The collection of a paranormal investigator who traveled the country collecting haunted items and stories.

You can climb to the summit of Black Mountain, as long as you sign the waiver.

Beautiful waterfalls grace a canyon visibly torn by a violent tornado.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

An enormous natural sandstone bridge in Kentucky.

Moonbows over Kentucky.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.