An innovative local park built from an abandoned sewage treatment plant.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

This legendary urban waterfall creates a dazzling display of rainbows.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

This museum offers an actual time machine back through Colorado's past.

A downtown park built on top of unclaimed graves.

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

The second-largest giant sequoia in the world.

Quite simply the largest tree in the world (by volume).

Four hundred granite steps were built into this massive rock by the National Park Service.

Try the frozen treat that inspired Arrested Development's famous banana stand.

Someone really, really wanted to save this fast-food icon from demolition.

One of the largest helium balloons in the U.S. is a 112-foot ginormous orange.

The helicopter that "Tricky Dick" absconded from the White House in on his last day in office.

A very tiny church, bisected by a now-dead oak tree and marooned in the middle of a shopping center parking lot.

This California tree is the single source of the state's entire orange industry.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.