The National Park Service’s best-kept secret with views that rival any in D.C.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

A 115-year-old restored German dining hall awaits those who venture beneath the Minnesota State Capitol.

The final resting place of the poets Shelley and Keats.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

Designed to provide fantastic views of the surrounding rainforest.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

This inverted metropolis model is the artist's "revenge" for not being allowed to have a doll house as a kid.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

The hippo that stands on this university campus was once a drunken flea market purchase.

This location holds the truth to what truly happened that faithful night.

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

The damming of the Colorado River buried an iconic geologic formation before record-breaking drought brought it back.

The United States Capitol's former columns still stand.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

A once-groundbreaking power plant turned into a hotel and mini-museum of archeological and geological wonders.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.