An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

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

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

The California capital city once stood 10 feet lower than it does today.

The neighborhood of Eagle Rock is named after a gigantic boulder with a shadowy surprise.

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

Wild West history in Hollywood style.

Hand-crafted tributes to a stray cat named "Room 8" now cover this LA elementary school.

Church and home-museum of a 1920s female revivalist preacher with a very sordid past.

Nancy Thompson's Home from "A Nightmare on Elm Street."

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

This glamorous old building is said to have inspired the Tower of Terror.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

The private clubhouse for the members of the Academy of Magical Arts.

The legendary building that needed ghostly approval before being built.

Have a seat with the father of modern computing at this Manchester monument.

An unsanctioned shrine that sprung up outside the late singer's home is causing a stir in London's Highgate neighborhood.

This hospital helped pave the way for treatment that drove down child-mortality rates in 19th and 20th centuries.

A wellspring of creativity in an already artsy East London neighborhood.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

A living memorial to the trees London lost during the Great Storm of 1987.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.