A riverside tiny house with books and other treasures galore.

Up-close opportunities to see working birds of prey.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A 19th-century cabin built into a hollowed-out Sequoia tree.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

The only thing stranger than stumbling onto these philosophical musings is the story of the homesteader who created them.

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

Home of the "true" equator.

An architect's childhood fantasy treehouse made real.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The oldest apple tree in the Pacific Northwest.