Once an ancient Roman bath, now a hotbed of geothermal energy and a hub for energetic innovations.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

As if T-rex wasn't big enough, this Canadian monument is four times larger than the real thing.

A seven-story wooden coal tipple stands this former mine, the last of many that once covered this area.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

Not for the faint of heart, this long pedestrian bridge rewards those who brave the wobbly walk with a beautiful view.

To get to or from this Canadian ghost town, you'll need to cross 11 single-lane bridges.

A local pineapple cannery once dumped pineapple trimmings off of this pier, with sometimes smelly results.

A small alleyway with an unusual moniker.

A signal indicates the entrance to this alley, rumored to be a meeting place for witches.

For six months of the year, three giant mirrors direct a pool of sunshine onto this otherwise occluded town.

Often referred to as the largest spring in America.

Previously a hot spring, this park remains a site of unique history, wildlife, and geology.

A charming museum of natural history featuring dioramas and exhibits made entirely by college students.

The first handmade canoe built by members of the Passamaquoddy in over a century.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.

An underwater restaurant, surrounded by a coral reef.

Peer into this window for an interesting glimpse into the public utilities that make this city run.

This eatery is emblematic of the connection between Jamaica and Nubia.

This North African stone complex is considered to be the oldest astronomical observatory on Earth.

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

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

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

The grounds and buildings of an old wood pulp mill have been transformed into an innovative art park and museum.