Places meltingknight Wants to Go

Largest necropolis in the Mediterranean.

The ruins of this medieval tower are destined to crumble into the sea.

You can row a boat through this ancient underground reservoir.

Found down a long dirt road, a sacred Mexican cenote and 18th-century hacienda remain hidden.

Take a dip beneath the stalactites in this amazing cenote.

This popular cave pool is truly magical, despite the crowds.

Now home to hardy plants, these sand and gravel dunes once held back a massive prehistoric lake.

A small museum packed with specimens from important fossil sites and minerals from historical pegmatite quarries.

The scars of World War II are preserved on its walls.

England's most famous front door has an accidental doppelganger.

A strange and ancient landscape hides the dark, cavernous remains of a 5,000-year-old flint mine.

If they push on just the right spot, even the weakest person can move this titanic boulder.

A granite rock formation littered with various species of moss, lichen, and fern.

This stone quarry was used to make axes and other tools more than 6,000 years ago.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

An effigy of Vancouver's Gastown neighorhood's namesake.

A hidden plaque is the only reminder of the lost palace where two storied English kings were born.

The largest salt lake in the Sahara is mysteriously alluring.

This giant sculpture made of trash is a critique of society's wastefulness.

The sea urchin sculpture is an unusual commemoration of a New England town's seafaring history.

A public art jibe at one of the United States’ oldest and longest-serving senators.

Learn local history while picking up groceries at this museum tucked inside a supermarket.

A deep mark on the remains of a Roman temple, believed to be left by a legendary warrior.

Plaques on its facade commemorate the Tiber's most destructive deluges.