Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Giant origami crease patterns engraved in Santa Monica intersections may even be visible from space.

Legendary prop shop filled with one man's collection of scientific curiosities.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

A mysterious "wedding cake" castle in the middle of the urban desert.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

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.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

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

Unique antiquarian shop specializing in globes, maps, and prints.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

A hands-on traveling collection of the innovative devices of yesteryear.

A cozy bookstore is tucked within an old gold mine shaft beneath the cafe and ice cream shop.

A battle between nature and architecture in the Cambodian jungle.

The United States Capitol's former columns still stand.

A self-built castle made by a mysterious man.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

An homage to everyone's favorite prehistoric cartoon family.

The headquarters of a secretive order is also a beautifully-designed park.