A floating underwater hotel, created by a Swedish artist.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

An icy lake tucked among jaw-dropping alpine panoramas.

Thirteen trees representing the original thirteen colonies were planted with soil from historic Revolutionary battlefields.

The homestead of American patriot John Adams.

A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.

This statue, deep in a Swedish forest, is all alone, just like the renowned recluse would have wanted.

The only surviving prototype for Buckminster Fuller's house of the future.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

The only runway directly into the magic kingdom has been closed since 1972, but it still sings to you if you drive fast enough.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Vintage cars and motorcycles race for glory in a throwback motorsport celebration on the Jersey shore.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

The city that saw the birth of Sweden is now home to an impressive collection of work from its favorite artist.

These beautiful wineries were at the center of Lake Erie's "grape belt" back when the Midwest dominated American wine production.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.