A museum dedicated to exhibiting remarkable outsider art.

One of the oldest living oak trees in the Southeast.

America's only nuclear missile silo open to the public.

The Boston square dedicated to the dark poet who was born nearby.

Visit this playground of waterfalls, caves and sinkholes.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

A wondrous old library overlooking the nation's capital.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Sister store to the Echo Park Time Travel Store.

Most famous work of one of Frank Lloyd Wright's sons.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Pick up all of the cosmic knick-knacks under the sun or take a creative writing course, all offered in this novelty storefront.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Couple's personal collection of pinball machines turned public pinball museum.

A clear blue swimming hole with hidden caves, still unexplored.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Seattle's own bad art museum located inside Cafe Racer.

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

A lush green oasis in the middle of Chicago.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.