This uninhabited island in Maine is home to various works of art left by visitors over the years.

The most photographed house in Maine looks good enough to eat.

The world's largest rotating world.

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

The highest point in Maine is a grand gift to the state citizens that also happens to be one end of the Appalachian Trail.

This tiny patch of arid sand sits in one of the greenest states in the United States.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

This magnificent Japanese garden provides a moment of Zen in rural Vermont.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

The former home of the hard partying literary power couple is now one of the only museums devoted to their story.

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

Old neon signs from the City of Brotherly Love provide a snapshot of the city’s evolution.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

A daily replay of the experiment that proved the rotation of the Earth.

The abandoned coal loading dock is a canvas for unsanctioned art.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

Dr Barnes' $25 billion private collection of art and arboretum.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A layered tribute to the work of mosaicist Isaiah Zagar.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Underneath downtown Lincoln resides a network of caves that was also the city's first brewery.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.