Walk the whole Mississippi River!

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

An extensive collection of ancient Egyptian artifacts and mummies.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

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

An astounding collection of medical specimens, including bits of President Lincoln.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

The only diamond mine in the world where you can keep what you find.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

Unlock the secrets of the conjuring arts.

One of the oldest living oak trees in the Southeast.

A collection of full-size movie monsters opened to the public.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Unique antiquarian shop specializing in globes, maps, and prints.

This massive redwood tree has a hole in the base big enough to drive through.

Nondescript elevator doors open to reveal a stunning, surreal world.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.