The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

Try not to get slimed in Tribeca.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A crumbling hospital from the 1850s on Roosevelt Island.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

This former iron ore mine comes alive with fascinating stories of its history.

From this isolated strip of land in Newfoundland, Amelia Earhart became the first woman to fly solo across the Atlantic.

This statue of the "father of television" stands prominently in the United States Capitol.

Industrial ruin decimated this tiny New England company town in a fashion no one saw coming… and even fewer remember today.

A New England curiosity cabinet, one hundred years on.

A small chapel celebrating the spiritual bond between dogs and humans.

Cheap art and political theater in Vermont.

An obscure federal monument honors the French diplomat who served as Ambassador to the U.S. during WWI.

A former atom smasher turned into an art gallery.

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

The mansion and cenotaph of the New Hampshire Faust.

The birth home of one of cinema's legendary actresses.

According to legend, Bob Dylan sneaks in twice a year to eat dinner with Jack.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.