Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A garden in Lisbon filled with giant porcelain creatures.

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

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The world's oldest bookshop still in operation.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A beautiful but toxic fountain of mercury.

An elaborately decorated house sits on an otherwise quiet street.

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.

A science fiction-inspired apartment building designed by a famous Spanish architect.

An architect transformed this abandoned cement factory into his castle-like workshop.

This house's itty bitty size means no humans allowed.

Eccentric sculpture garden brings Basque mythology to life.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

A theme park made of glass, from the gleaming books on the shelves to the crystal fish in the mirror lake.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

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

A gargantuan crystal kingdom.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.