Sleep in a climate-controlled plastic bubble for the night.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

A tongue-in-cheek arcade where the games are based on everyday life.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A kaleidoscopic warehouse-maze of handmade neon signs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A Belle Epoque bordello turned into a themed love hotel.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

The celebrated eyesore created by starry-eyed sweethearts.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A museum of carnival attractions where you are invited to ride the rides.

Hop on the train and tour an elaborate miniature town made completely of junk (including the train).

The highest point in Virginia can only be reached by passing through ponies and flowers.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.