A historic, scenic mill that was forced to close due to overlogging.

The deepest spring in Missouri.

Hidden in the New Mexico desert southeast of Roswell, nine small deep lakes formed inside sinkholes.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

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

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

Narrow gorges and deep pools created by long-ago glaciers.

This suburban park recalls the history of a famous tavern. Despite the name, it's no ordinary place!

Did the legendary Scottish knight William Wallace actually take refuge here after a major battle?

Plans for this peninsula included houses, the United Nations Headquarters, and a nuclear power plant. When none of them worked out, it became an expansive park.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

A pocket of serenity in hectic Buenos Aires, complete with a peaceful courtyard and massive library.

This luscious masterpiece created by landscape designer Bevis Bawa inspired the work of his brother, a famous Sri Lankan architect.

10,000 flowered plants bloom in the City of Roses.

This sandstone mansion was the home of two of Oregon's most important pioneers.

The ruins of an old mill lie in a small ravine along a hiking trail near Little Seneca Creek.

The ruined abbey includes a rare surviving example of a monastic latrine.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

A long-forgotten Victorian swimming hole is still a fun spot for a dip.

Rare recess caves fill this unbelievably beautiful Ohio park.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

Beautiful natural falls where Satan once ruined a pot of beans.

Even Henry David Thoreau found this glacial pothole irresistible.