A wondrous old library overlooking the nation's capital.

The national park was once a plantation estate.

Decades before the scandal, this staircase on the river was a literal "water gate."

Largest Roman Catholic church in North America.

This quiet park's strange sedimentary spires were named after Kodak's color film.

This striking art museum holds an amazing series of curiosity cabinets.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

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.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Partially submerged Buddha heads freckle Chicago’s neighborhoods.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

The 606 is a decade in the making.

Beloved bar home to musicians of all eras and reputations.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

This tribute to the founding father of the American dictionary originally contained a spelling error.

All of Chicago's wood-paved streets are long gone but two alleys remain.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

Shop of curiosities with a dinosaur museum tucked in its basement.

Tour the oldest unrestored plantation house in America that is open to the public.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

The final resting place of soldiers' loyal canine companions.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.