Arizona
Once a part of Mexico, Arizona now contains some of America's largest cities and lies within two principal physiographic regions of the United States. Learn about the Colorado Plateau and cites like Phoenix. See more »
what's inside: geography of the southwestern united states
The geography of the Southwestern United States is rugged and diverse. Discover all of the states within the southwest, including Arizona, New Mexico, Oklahoma and Texas.
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New Mexico
While largely desert, New Mexico occupies part of four major physical regions of the United States: the Rocky Mountains, the Great Plains, the Colorado Plateau, and the Basin and Range. See more »
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Oklahoma
The geography of Oklahoma is dominated by rolling plains and the Ozark Mountains. Explore the landmarks, geographical features and cities of Oklahoma in this section. See more »
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Texas
Texas is the second largest state. Learn about the major cities, landmarks and geographical features in the state known as the Lone Star state. See more »
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Geography of Albuquerque
Albuquerque, New Mexico, the state's largest city and the seat of Bernalillo County.
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Geography of New Mexico
New Mexico, one of the southwestern states of the United States. It is bordered by Arizona, Colorado, Oklahoma, Texas, and Mexico.
Geography of Texas
Texas, a state in the south-central United States. It extends from the Gulf of Mexico and the Rio Grande Valley northward into the heart of the Great Plains.
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