Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

A stone marker commemorating the first time sound was transmitted over wires.

The former home of a Boston physician whose murder led to a revolution in forensic science.

Dedicated to a colonial woman who was hanged for being a Quaker.

Dozens of tiny doors dot Newport's Mansion Hill neighborhood.

An underground passage is home to a guillotine that predates the French Revolution by more than two centuries.

The world's only surviving heavy cruiser has a haunting history.

A dedication plaque on this Boston tunnel is a microcosm of a massive, controversy-laden construction project.

Despite the name, this ancient piece of crystal may not have been a lens at all.

Not quite the menace it once was, this monster still has some chops.

Historic Hull Street was actually the first street with a proper name in the Boston area.

This ambitious father and son team reigned supreme over the North End, and witches, for many years.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The first declared National Monument in the United States.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Rumored to be a giant robot in disguise, this colossal chef has been the beloved symbol of Tokyo’s kitchenware district for decades.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

South Dakota's oldest operating brewery is housed inside a historic firehouse.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

Every president in history is immortalized in bronze in downtown Rapid City.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

A German shoemaker-turned-folk-hero whose impersonation of a Prussian military officer earned international notoriety.