The celebrated eyesore created by starry-eyed sweethearts.

This demon atop the Notre-Dame de Paris looks utterly bored.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

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

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Op-art architecture designed for happiness.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The beautiful baroque library of the Hapsburg empire.

A Bibliophile's Dream.

Four hundred granite steps were built into this massive rock by the National Park Service.

Quite simply the largest tree in the world (by volume).

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

Stroll through a wonderland of stupendous moss-covered trees.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The highest point in Washington state is a volcano covered in glaciers.

The land is home to swimming ponies and a legendary 18th-century treasure.

The only road through the heart of Glacier National Park.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

In Bermuda, this formal naval residence has become a go-to for cliff-jumpers and hikers.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.