This abandoned, windowless concrete block is one of the strangest buildings in Tulsa.

An enormous natural sandstone bridge in Kentucky.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

To honor his gardening wife, this yard artist turns bowling balls into playful, colorful sculptures.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

This historic folk art garden contains a nightmare tower that claims to be the world's largest concrete totem pole.

A 70-foot replica of the famed Eiffel Tower.

When you can afford only half a road, you build only half a road.

Whimsical bronze sculptures of smiling coins and houses await visitors to this park.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Nestled in Onondaga State Park, over 100 canoes carefully stacked in a replica of the famous standing stones.

European castle ruins in an American state park are actually the product of death and grief.

Rusted and decayed, this former mining site is a portal to the past.

An adorably sweet display of sculpted Precious Moments figurines.

A 19th-century utopian religious society designed to align with the latitude of Jerusalem.

These pink granite water slides are the result of millions of years of erosion.

Away from the crowds of fishing enthusiasts, take a hike deep into the woods and journey into an eerie darkness.

Giant granite rocks standing end-to-end like a train of circus elephants.

The world's largest collection of porcelain "veilleuses-theiere," or night light teapots, includes four that belonged to Napoleon.

Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

William Faulkner kept his beloved estate wild and untamed.

An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.