The world's most important buildings shrunk to a tiny size.

This outsider art house has gone from clinical creation to astounding artwork.

"World machine" built by an untrained Austrian farmer.

The world's oldest known salt mine.

American soldiers discovered Europe's best one-liner at the end of World War II.

Visitors dip into a variety of pools of what was once ice.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

The topiary maze at the Habsburg hunting lodge.

The final resting place for the remains of 143 Habsburg royalty.

About as hidden as can be, this specialty coffee shop is wedged between multi-story buildings at the end of a dark, skinny alleyway in Seoul.

The world's oldest bookshop still in operation.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

A lush oasis full of vibrant plants and striking geometric displays.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

Storybook cottage in Beverly Hills was once the site of 1920s silent film studio, affectionately known as "The Witch's House."

Ride a dragon train into a world of dwarves.

This public library and its impressive collection of academic books have not changed since the 17th century.

This historic Dutch newspaper building is covered with media-themed details—and one unrelated oddity.