A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

Experience this Iron Age village the way that its original residents would have.

The precise origins of this pink sandstone temple are unknown.

This strange pyramid is a unique feature of the Austrått Manor.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Centuries of warfare, tragedy, executions, and poetry come together in this 13th-century fortress.

This memorial celebrates the legacy of the British-Norwegian resistance movement during World War II.

Since the 1960s, this small village has invited painters to decorate its walls.

This large, castle-like structure is hidden amid the mountains on the grounds of the Utah State Hospital.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

America's oldest archaeological site or a muddled case of wishful thinking.

The kind of mixed-up place that drives archaeologists crazy.

Faces carved into the cliffs create an otherworldly walking trail.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

A winding path built in secret on the edge of the continent.

A massive rock in the surf steeped in legends.

A hidden oasis in the heart of Minneapolis is also an Important Bird Area.

Hundreds of small crosses have been carved into the bark of the trees outside this small Estonian village.

Hundreds of unusual wheel crosses poke above the earth in this small Estonian cemetery.

Tombstones buried in overgrown grass mark the deceased occupants of this abandoned graveyard.

Legend says lovers who hold hands while venturing along this stone jetty and kiss at the end will remain together forever.

Two well-hidden huts let animal lovers spend the night among the bears, wolves, and other predators of the forest.