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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

The summer home and later final residence of acclaimed American sculptor Augustus Saint-Gaudens.

Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

A morbid piece of memorabilia from the most famous shipwreck in current history is just one of the many poignant artifacts in this Canadian museum's collection.

Once America's longest-manned military fort, now an abandoned hulk.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

This taxidermic smorgasbord was co-created by an artist poached from the Museum of Natural History.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

The literary king of the Jazz Age was born in this lovely Minnesota home which still honors his legacy.

One street divides a single town that stands in two U.S. states.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

This massive roadside mascot was the first version of the giant to illustrate his butt.

Ironically this massive termite is the mascot for a company that is acclaimed for killing his kind.

This historic Rhode Island mini-cemetery features a number of headstones run through with mysterious holes.