She was written out of Grand Canyon history, but fires are putting her iconic buildings at risk. Meet Mary Colter, the architect you've never heard of.

I visited the Grand Canyon's North Rim looking for a uniquely Arizona experience. Instead, it taught me what it meant to be an Arizonan.

Nestled within the Lake Mead National Recreation Area near the Arizona-Nevada border, this natural observation deck offers the kind of views that make you question why you’ve spent so much time ...

This brave cleaning crew hangs from the Grand Canyon west rim's Skywalk twice a year.

360 CHICAGO announced Wednesday that its observation deck, which has always occupied the 94th floor of the iconic skyscraper, will be expanding to the 95th floor.

The operator of the 360 Chicago observation deck near the top of the former John Hancock Center said the attraction is taking over two additional floors, creating the city’s first multilevel ...

The operator of the 360 Chicago observation deck near the top of the former John Hancock Center said the attraction is taking over two additional floors, creating the city’s first multilevel ...

An unusually high number of hikers had to be rescued by helicopter on the Grand Canyon, and a construction site is to blame.

Thirteen helicopter rescues have occurred over seven days at Grand Canyon National Park, the National Park Service said in a statement Sunday.

Environmentalists argue a flood is needed to restore the Grand Canyon's beaches and preserve its wildlife.

Dr. Dennis Smith, of Olympia, Washington, was attempting a rim-to-rim hike from the South Rim to the North Rim when authorities and friends said he collapsed on the trail.