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

This large stone residence served as a field hospital during the Battle of Gettysburg between stints as a tavern.

This small, but beautiful waterfall has attracted visits from artists, composers, and two United States presidents.

The only Leonardo Da Vinci painting in the Western Hemisphere.

What began as a prominent Burning Man art piece is now an iconic symbol of downtown Reno.

Five restored historic road bridges in a park along the Kalamazoo River.

The first project by the Bureau of Reclamation illustrates both the upsides and downsides of reclamation.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

This former mining railroad is one of the best-preserved short lines in North America.

This crumbling stump is all that remains of what was once thought to be the oldest living organism.

Come for the speed, leave in love with the desert.

Near the summit of Mount Washington, a stone monument remembers a life lost to one of the mountain's infamous storms.

The birthplace of the alleged inventor of baseball.

Inside this community-run museum, visitors are treated to the history of toys and games.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

The first keystone arch railroad bridges constructed in America.

You can get anything you want at the former site of the restaurant immortalized by Arlo Guthrie.

The Hudson River School comes alive at this palatial estate.

Take a trip back to the 1950s and the heyday of the road trip along Historic Route 20.

This 19th century hydroelectric powerhouse was the first of its kind.

The train collection of an eccentric New England seafood mogul is now a National Historical Site.

A huge railroad museum with over 100 pieces of rolling stock focusing on the railroad history of Pennsylvania.

An improbable water gap where the West Walker River, paralleled by a state highway, crosses the Singatse Range between Smith and Mason Valleys.

This rest area is also home to a remarkable petroglyph site.