How did a massive marine arthropod find its way to landlocked Ohio?

The largest earthwork effigy in the world.

This park pays homage to the region's rich industrial history of brick making.

A very big rock just plopped down in the New England woods.

An ancient glacial pothole waterfall in the heart of the Green Mountains.

A cable-suspension footbridge that hangs high above the Mill River.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

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.

One car at a time please.

Even Henry David Thoreau found this glacial pothole irresistible.

A gas station and a state sign commemorating the most famous claims of extraterrestrial abduction.

A long-forgotten Victorian swimming hole is still a fun spot for a dip.

Stumps of an Ice Age forest, visible only at low tide.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

Abandoned Italianate architecture on the coast of Maine.

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

A beautiful, water-filled quarry that has become a popular haunt for swimmers and artists.

The remains of a large iron mill that once stood in the remote woods of northern Maine.

The “Grand Canyon of Maine” is a three-mile gorge full of striking geological features.

This Maine bridge may be the last wire-supported bridge of its type in the world.

Former laboratory of radical psychiatrist Wilhelm Reich.

A showcase of geologic history is home to one of the largest collection of lunar meteorites on Earth.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.