A potpourri of rocks, fossils, and crystals is rounded out by a dinosaur garden and a 15-foot great white shark.

A unique rock formation that only a few have managed to venture inside.

This magnificent arch is all that remains of a former smelt mill.

The walls of this sandstone outcropping are covered with 2,000-year-old artwork.

This village surrounded by breathtaking waterfalls is one of the wettest places on earth.

More than 1,000 stone figures were discovered in a small Nigerian town, where they had been sitting for centuries.

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

This ancient holy well is older than much of the city that surrounds it.

These courts are the only ones of their kind in the world, made for a unique ball game that dates back to the 1700s.

This spooky road cut through a mound of ancient coral might be haunted by a witch.

One of almost 200 confirmed impact craters in the entire world, untouched for tens of millions of years.

The hidden ruins of a mill that is linked to an attempt to assassinate the vice president of the United States.

Once the largest gravity dam in the world.

Thermal springs underneath the seabed provide the heat and bubbles for these beachside natural hot tubs.

Rushing water plunges over a 100-foot drop created by an ancient lava flow at this majestic waterfall.

A road that winds through this natural cave is the only way to access the small, appropriately-named village of Cuevas.

A surprising number of shipwrecks visible just off the Somaliland coast.

This remnant of an old railroad is the tallest surviving wooden trestle bridge in Victoria.

A rare chance to enter an original gold mine from the 1800s.

This crystal clear water basin feeds the Lao river and powers a hydroelectric power plant.

The longest cutting on the M62 contains some surprises—though it's best to leave the motorway to appreciate them.

This tunnel was built in order to protect the village of Daroca from flash floods during rainy seasons.

This island castle contains enough secret passageways to support a season of Scooby-Doo episodes.

This Scottish bay still reveals evidence of its days as a seaside swimming pool.