Organ Pipe Cactus National Monument, Arizona
The distinctive organ pipe cactus is common in Mexico, but Organ Pipe Cactus National Monument -- at the northern edge of its natural range -- is the only place these giant cacti grow in the U.S.
The distinctive organ pipe cactus is common in Mexico, but Organ Pipe Cactus National Monument -- at the northern edge of its natural range -- is the only place these giant cacti grow in the U.S.