A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

A forest wonderland caused by Burlington, Vermont's aggressive southwestern winds.

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

A giant toy jack made of numerous welded-together fire hydrants.

The world’s largest underground marble quarry is hiding in Vermont.

Cryptid lake monster honored with its own monument.

This unusual building straddles two countries.

This folk art dinosaur was almost pushed to extinction due to lack of a building permit.

Scary metal statues adorn some of the signature buildings of Burlington, VT.

This New England covered bridge is home to the tale of a jilted lover known to haunt the area.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

A beautiful, creepy 19th-century castle stands incongruous 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.

This roadside stop between Goblin Valley is the perfect location to view some of the region's natural wonders.

This outsider art paradise is filled with dinosaur sculptures crafted from recycled machinery.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

A dazzling display of red rocks weathered into spires and hoodoos.

A small oasis not far from downtown Moab.

An Ancestral Puebloan ruin that appears to burst into flames in the sunlight.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

A tunnel with windows, so you don't miss out on the impressive views.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.