Village situated on a narrow volcanic escarpment.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

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

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This castle ruin in the middle of nowhere is a gem for wildlife enthusiasts.

This chimerical bridge/tunnel appears to dead end right into the sea.

This encrypted monolith protected a secret of Norse mythology by hiding in a church wall for over a millennium.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Church built on the site where the last tsar of Russia and his family were killed.

No one knows why ancient labyrinths were built on this tiny northern island.

Unusual, mushroom-like rock formations caused by weathering and water erosion, set to disappear, according to geologists.

Abandoned castle was once a grand example of Russian privilege, built exclusively to win a frivolous bet between noblemen.

A little church on a tiny island looks like something from a fairy tale.

Legends of time travel and magical woodland creatures bolster the natural charm of this verdant sanctuary in the midst of Moscow.

This Russian religious complex is a Frankenstein's chapel that includes influence from almost all the major faiths.

Stunning examples of Russia's 18th-century wooden architecture.

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

Florentine Renaissance style building in Switzerland, home to the world's largest taxidermy Great White Shark.

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.