Environmental factors

Gateway Arch National Park is located between the towering skyscrapers of downtown St. Louis and the muddy meanders of the Mississippi River. Our urban location helps us reach millions of visitors a year, but it also brings challenges.
 
Mississippi River
A tugboat pushing barges down a grey river. A shadow of an arch is reflected on the opposite bank.
French merchants chose St. Louis's convenient location along the Mississippi River hundreds of years ago. The river remains important today!
Disturbed Lands
Two diverging brick walking paths, with garden plants growing between them.
The park grounds have seen centuries of human habitation and influence. Learn about this history, and our plans for the park's future.
Plants
The stainless steel arch, shaped like an upside down U, with various trees and shrubs
What plants are here? Why were they chosen? How are they maintained?
Sky Ranger
photo of uniformed ranger Richard Fefferman with a buffalo mascot who is wearing a blue shirt
Although St. Louis has substantial light pollution, celestial events are still observable here. Read our Sky Ranger's blog, updated monthly.
Sustainability
The Gateway Arch, green grass, trees and a dark blue refection pond in the foreground.
Explore ways the National Park Service is determined to be a sustainable steward of Gateway Arch National Park.

Last updated: July 31, 2025

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Mailing Address:

11 North 4th Street
St. Louis, MO 63102

Phone:

314 655-1600

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