A haunting collection of the vanished and disappearing natural world.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

The history of radiation is on safe display at the foot of a radiation science laboratory.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

France's national museum of scientific and industrial instruments.

This museum houses an imposing skeleton army comprised of creatures great and small.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This historic building provides a powerful glimpse into the lives of Japanese Americans forced to relocate during World War II.

The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Explore a misty river canyon from a metal bridge system.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

See massive fossils that are over 200 million years old in northeastern Arizona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This comprehensive collection features Native American artifacts dating back centuries.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

Ancient pueblos built into the base of a natural canyon wall.

This historic national park is covered in the stunning ruins of red rock pueblos.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

The oldest continuously occupied public building in the United States.