This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

This state park was once an important Native American cermonial center.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

This quiet park's strange sedimentary spires were named after Kodak's color film.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

The beauty and the beast of hydraulic mining is on full display at this California Historic State Park.

Even Henry David Thoreau found this glacial pothole irresistible.

The scant remains of an expansive indigenous civilization can be seen at this Arkansas state park.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

Foragers once flocked to this big beautiful bayou to hunt for pearls.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

This natural wonderland is a unique chance to explore a Carolina bay, a mysterious geological formation of unknown origin.

The eerie ruins of a remote abandoned hamlet said to be founded by the survivors of a shipwreck.

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

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

Legend has it the mill owner's daughter, Mary Musgrove, helped a Patriot soldier hide behind these falls.

A historic blockhouse and trading post give a glimpse into the early colonial history of South Carolina.

The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.