This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

An exotic wildlife habitat right off The Strip.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

In one Chicago park, a trio of werewolves are waiting to devour their fallen brethren.

This salad has two key ingredients: hearts of palm and green ice cream.

A lion given to the prime minister somehow got stuffed and sent to Florida.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

This quiet park's strange sedimentary spires were named after Kodak's color film.

This blowhole is supposedly caused by a trapped monster.

A contemporary fresco movement illustrates the region's rich history.

A tiny, unassuming park in Tampa that belongs to the Republic of Cuba.

This kitsch eatery is chock-a-block with bric-a-brac.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

St. Augustine's record-setting narrow street was designed to protect against pirates.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.