This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

Petroglyphs, bird watching, and a 100-year-old Ranch in one location.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

A sharp bend in a dramatic river canyon cut through red rocks.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

A tunnel with windows, so you don't miss out on the impressive views.

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

Once disputed as the largest sundial in the world.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

These subterranean storage areas hold emergency water reserves.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

This private residence was the template for one of the most beloved television homes of all time.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A 300-ship graveyard, with a few still visible at low tide.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A forgotten sea village stands silent after hurricanes deemed it obsolete.

Over 50 whirling pools left behind from the glacial age.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

A natural gas leak provides a flickering flame beneath a waterfall.

World's largest herd of white deer populate a former U.S. Army depot.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.