The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

The quintessential Japanese rock garden has existed for more than 500 years.

A beautiful bamboo trail tucked in this famous Japanese Shrine.

Starship-temple contains 400 tons of drinking water and offers free Japanese lessons.

This 14th-century temple is also known as the "Temple of the Golden Pavilion" for its gorgeous gilded reliquary hall.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

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

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

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

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

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

A marvel of Byzantine engineering under the streets of Istanbul.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

This blowhole is supposedly caused by a trapped monster.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

These ancient sacred grounds granted amnesty to those who managed to reach them.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This black shoreline is made up of exploded lava particles.

A historic observatory precariously perched at the "Top of Europe."