A monument to the art of slicing people open.

A castle that was built stone by stone by an eccentric journalist.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

A submerged archeological park still holds the wonders of a Roman Sodom.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Countless grotesque faces stare out from this eerie Prague art wall.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

Odd outsider art installations surround a Gold Rush-era ghost town.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

One part local history, 99 parts gruesome haunted house.

Famously misunderstood wonder of the ancient world

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

A haunting collection of the vanished and disappearing natural world.

The angel of death appears to weep black tears at this grave marker.

Tiki luxury on Nob Hill.

The world's largest collection of witchcraft regalia.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

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