Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

A roadside music shop featuring a confounding series of folk art installations.

The world's largest version of this iconic puzzle cube is located in Knoxville, Tennessee.

The second-oldest garden cemetery in the U.S. was also a college brainstorm spot of Stephen King.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

A historic Montreal market that was the city's agricultural hub for over century.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This roadside stand claims to be the world's smallest bookstore.

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

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

Five mythical trolls have taken up residence in woods and hidden on paths at the Coastal Maine Botanical Gardens.

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

Some believe Ponce de León's mystical spring lurks right under a public drinking fountain.

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.

Four metal statues of massive animal penises stand outside the university's Animal Sciences building.

A massive tribute to this small county's top agricultural product.

One of the world's largest automobile junkyards is a unique landscape of metal and moss.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

More than five miles of underground passageways.

A local scoured more than 1,000 acres for stone to create his masterpiece.

These light, hollow rolls have been linked to Acadia National Park since the 1890s.

East meets West in this Japanese-style garden featuring plants native to Maine’s Mount Desert Island.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.