Erosion and time have created a naturally-formed water park.

Traditional 15th century Chinese garden in the middle of Vancouver.

Submerged trees jut ghost-like out of an idyllic turquoise mountain lake.

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

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.