A psychedelic labyrinth on the San Francisco bay.

A 140-year-old castle with underground caves hidden in San Francisco.

A terrific purveyor of natural history objects and curios.

These 17th-century mummies are no longer naturally preserved, but remain on display today.

Be(w)ar(e) the moat around this historic Czech castle.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

The headquarters in Salem doubles as an occult art gallery.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

A collection of full-size movie monsters opened to the public.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This tiny lake temple dedicated to a water goddess seems to float on the surface.

One native village in Bali lays their dead at the foot of a holy tree whose natural fragrance seems to hide the stench as the bodies decompose.

An abandoned hotel in the highlands of Bali is shrouded in stories of ghosts, curses, and corruption.

Medicinal spa created with the discharge from a geothermal energy plant.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

This elegant arc of a waterfall marks a religious turning point.

Rising from the sea like a stone monster.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

This black shoreline is made up of exploded lava particles.

A trash dump made beautiful by nature's power.

Mile-long cave system near Great Smoky Mountains.