An early-19th-century hotel with a past that is steeped in the Civil War.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

Said to be one of Sweden's most haunted places, this vicarage once even attracted a ghost-busting priest.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

Visiting dignitaries and Hollywood stars once stayed at this 1920s hotel, alongside ghosts that are said to haunt its corridors.

In the middle of a remote desert town is a surprisingly opulent hotel.

This curious fresh and salt water lake holds a secret that draws in deep divers from around the world.

The small sanctuaries lie just off the beaten path near one of Bhutan's most famous attractions.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

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

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

Legend has it fairies gathered at the site of this medieval castle.

An ethereal glowing blue ocean cave in Croatia.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

The hidden offices underneath Memorial Bridge have been locked up since 1976.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

An abandoned masterpiece of Soviet Brutalist architecture.

Enormous sandstone towers loom within a Czech forest.

This beautiful 16th-century necropolis marks an astonishing feat in heritage conservation.