Woven tree art gives this towering Australian woodland a touch of mystical whimsy.

A haunting deserted hotel is a favorite with artists and photographers.

360° views of the city plus five floors of optical illusions and hands-on science.

A 30-acre garden inspired by the principles of modern physics.

These fantastically named natural pools look like something out of a Scottish myth.

An abandoned desert hamlet swallowed up by sand.

Discarded animal sculptures stand forgotten by an abandoned aquarium and water park in Bosque de Chapultepec.

One of the largest wooden constructions in Europe was meant to be a casino, but soon became an orphanage.

Murals made with millions of colorful stones adorn the abandoned building.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

This abandoned hospital is one of the most haunted places in Costa Rica.

The hermit's humble home is hidden near the forested peak of Monte Marrone.

The abandoned transportation hub hides within the Glasgow attraction it once served.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

An incarceration museum on the spot of possibly the oldest prison in England.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

One part local history, 99 parts gruesome haunted house.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

Banksy gives themself artistic license with this piece of London street art.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.