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

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

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

This bright pink Gandhi memorial was built so that sunshine hits a specific spot on his birthday.

This precariously balanced boulder is said to be a hunk of stolen butter dropped by the gods.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

The painted and decorated towers of this Hindu shrine were once the tallest structures in one of the oldest cities in India.

The world's largest secondhand book market is a haven for bibliophiles and bargain hunters.

At 8,000 feet, the world's highest tea estate draws visitors for both its products and its panoramic views.

An abandoned settlement originally established by British colonialists in the Andaman archipelago.

This ancient Hindu temple is covered in thousands of colorful statues and has a long mythological history.

This experimental utopian "city of the future" in rural India may hold a dark secret.

A British general, a suggestive tree, a map of paradise.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

The celebrated eyesore created by starry-eyed sweethearts.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

Abandoned railway line circling the city of Paris.