A perfect circle of twenty-four mysterious holes dates back to prehistoric time.

The only Florida state park with publicly accessible caves.

Visit Lima’s one-stop-shop for sustainably sourced and produced Peruvian chocolate.

The remains of what was the most important religious complex in coastal Peru for over a millennium.

A failed, un-built suburb that has been going feral for decades.

This tiny little island has, as the name says, just enough room for its single house.

Home to some of the oldest hominid fossils ever found.

This historic observatory was established to keep shipwrecks from littering the Cape of Good Hope.

This marker identifies the location where three states converge.

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

Ruins of two abandoned stations destroyed by the power they sought to harness.

A stunning silver lining to global warming's gloomy cloud.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

Dozens of playful sculptures blanket these 200 rolling acres of farmland in an ode to art and landscape.

A portrait of the Charter Oak hangs in a frame made from the Charter Oak.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

This New England covered bridge is home to the tale of a jilted lover known to haunt the area.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

This hobbit-y little hot spring may be the oldest spring used by humans in all of Iceland.

This rusting remnant of the local herring industry is being given a second life.

A trio of hidden hot tubs takes advantage of Iceland's natural geothermal vents.