This bomb shelter-themed bar has barely changed since it opened.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

A Tucson museum and performance space full of found-object movable sculptures.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

The Magical World of George Phar Legler.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

This series of Scottish caves has no clear purpose other than baffling historians.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

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

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

A small but charming botanical garden that contains many exotic plant species.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

These three pillboxes still remain as a witness of the Spanish Civil War in a park of Madrid.

A reproduction of the famous prehistoric cave paintings is hidden underground at the National Archaeological Museum.

A lush indoor jungle fills this bustling Madrid transportation hub.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

Indents in the pavement are all that remain from a grisly death machine in Paris.

A surrealist timepiece by the artist of melting clocks.