Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

Enormous lake at the bottom of a unique cave system.

The oldest inn in England served brew to the crusaders.

One of the deepest blue holes in the world.

A monument to Poland's famous alleged UFO abduction case.

Some of the clearest water anywhere in the world.

Rocky Atlantic beach home to a stunning stone arch.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

Gigantic natural towers in a Russian plateau.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

Ottoman-era houses lovingly preserved.

One person's lost luggage is another person's treasure.

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

An 80-year-old house built out of newspapers.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

Things seem to roll, flow and run uphill on this short patch of road near Ariccia, Italy.

Fowl, love and death in Vietnam.

Ruins of a German Castle on top of a towering stone pillar.

Stalactites and stalagmites in a beautifully lit cave.

Cliffs full of fossils at the portal to England's Jurassic Coast.

Small shop offering mail-order rare and exotic plants.

A massive underwater sinkhole made famous by Jacques Cousteau.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

The private clubhouse for the members of the Academy of Magical Arts.