This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

A subterranean haunt where wine and homemade biscottis are always on the menu.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

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

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

A Seattle oddities shop brimming with Victorian-era gems and antique curio.

This Seattle curio shop collects and sells haunted items in order to spread wonder one grim artifact at a time.

Pick up all of the cosmic knick-knacks under the sun or take a creative writing course, all offered in this novelty storefront.

Protected from the elements, these Native American rock paintings have survived approximately 250 years.

Quirky movable sculptures have been racing through the town since 1983.

An electrifying collection of gadgets and literature from the 16th through 20th centuries.

Artistic Oasis in Industrial Ballard.

A comprehensive collection of bonsai set in a beautiful campus.

This monument remembers the first Japanese Americans forcibly relocated during World War II.

"Enter and be entertained or annoyed by Dada in Walla Walla."

Where else would a linchpin of post-colonial Native American cuisine anchor the menu but a museum?

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

A fine, large-aperture telescope available for public use.

A whimsical menagerie of devils, krampuses, satyrs, and other horned creatures.

What's that on the side of that building? Va Va Voom, it's Bettie!