A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This natural marble cave is one of only five national monuments in Oregon.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

A bizarre house filled with an astounding array of collections.

Hidden in the hills is a mysterious stone structure, known only to a few.

Each spring this woodland floor is carpeted with purplish flowers as far as the eye can see.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Pagan monument converted to Christianity with the population.

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

A cluster of granite granaries perched on stilts.

The corpse bride of Portugal.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

This small chapel is built of human bones and decorated with a golden skeleton.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

Dead weights honor the dead of Portugal's fishing industry.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

Picturesque intersection of witchcraft and ancient Christianity.

A unique seaside cave where Aleister Crowley faked his own death.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Houses are tucked between, on, and underneath giant boulders.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

This elegant neoclassical garden is a peaceful oasis in the middle of the Nepalese capital.

What was once the largest mine in North America has left behind a hollow hill filled with bright blue waters.