Organ Pipe Cactus National Monument

Organ Pipe Cactus
Sights and sounds of this designated International Biosphere Reserve reveal a thriving community of plants and animals. Human stories echo throughout this desert preserve, chronicling thousands of years of desert living. A scenic drive, wilderness hike, or a night of camping will connect you to a living desert.

10 Organ Pipe Drive
Ajo, AZ 85321
United States

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520-387-6849

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Organ Pipe Cactus
Organ Pipe Cactus
Organ Pipe Cactus
Organ Pipe Cactus
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Discover Organ Pipe Cactus National Monument

Organ Pipe Cactus photo

Organ Pipe Cactus National Monument is a vibrant and rugged desert landscape where towering cacti, dramatic mountains, and endless blue skies create a breathtaking scene. Located along the US-Mexico border in southern Arizona, this UNESCO biosphere reserve protects the only place in the US where the rare organ pipe cactus grows naturally. Visitors can explore scenic drives, hike through saguaro-studded valleys, and experience the serene beauty of the Sonoran Desert. Whether you’re drawn by the striking scenery, rich biodiversity, or peaceful solitude, Organ Pipe Cactus National Monument is a true desert wonderland.

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Organ Pipe Cactus National Monument Footed Mug

$27.99

Organ Pipe Cactus National Monument Cap - Sonoran Sunset

$24.99

Organ Pipe Cactus National Monument T-Shirt - Circle Stripe

$19.99

Organ Pipe Cactus National Monument Magnet - Sunset Photo

$5.99

Organ Pipe Cactus National Monument 3-D Wood Ornament

$29.99

Explore Organ Pipe Cactus National Monument

Organ Pipe Cactus protects more than five hundred square miles of mountainous Sonoran Desert landscape and is held sacred by the Tohono O’odham, Hia-Ced O’odham, and other Indigenous peoples, who continue to nurture this special place. Part of the world’s most biodiverse desert, this International Biosphere Reserve is the only place in the United States where the organ pipe cactus grows wild. Camp, hike, learn, and explore. Plus, with a little additional preparation, this park can be a stop on your trip to Mexico—its sister park is El Pinacate y Gran Desierto de Altar, located just across the international border. 

Sunset over desert with scattered cacti, rays of light breaking through clouds.
Arizona desert landscape with cacti and mountains at sunset.

10 days in Southern Arizona’s National Parks & Monuments

Discover diverse landscapes and rich history in ten days.

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Visit smart

Drive the Ajo Mountain Loop

This 21-mile scenic drive offers stunning desert views and access to must-see hikes like the Arch Canyon Trail.

Hike the desert trails

Try the Estes Canyon and Bull Pasture Trail for breathtaking panoramas of the monument’s rugged terrain.

Visit in cooler months

Summers can be extremely hot, so plan your trip between September and May for the best weather.

Be prepared for remote conditions

Cell service is limited, and water sources are scarce, so bring plenty of water and supplies.

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Our contribution

Over $162 million

Since our founding in 1938, WNP has provided more than $162 million in aid to our partner parks to fund educational programs, initiatives, and scientific research.

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Why stop at just one?

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