Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

This museum holds a fully-functional replica of the "Turtle," the first American submarine ever built.

The scant remains of an expansive indigenous civilization can be seen at this Arkansas state park.

Explore the dark underground corridors of this graffiti-covered former military fortification.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

An abandoned gun-funded 19th century utopia.

Yo, Adrian!

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

The "Seinfeld" diner.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.