The Mojave Desert spans California, Nevada, and Arizona and is home to Death Valley, where the highest temperature ever recorded on Earth was 134°F in 1913. Despite these hostile conditions, the region still hosts a great diversity of wildlife, including coyotes, bobcats, and desert tortoises, all adapted to survive with minimal water.

The desert’s extreme heat and arid landscape are also home to unique flora such as the Joshua tree, which thrives in spite of the poor soil and dry air.

Image: Manda Hansen

Alaska's tundra is a cold desert with freezing temperatures and long winters. Permafrost, a layer of permanently frozen ground, covers much of this region, making habitation challenging. However, beneath the ice lies a wealth of natural resources, including vast oil reserves.

During the summer—due to its latitude—the tundra experiences 24-hour daylight, known as the "midnight sun," though the landscape remains largely frozen and treeless. Wildlife, including caribou, arctic foxes, and polar bears, have adapted to survive these extreme conditions.

Image: Yuval Zukerman

The Rockies feature a high-altitude alpine climate, where temperatures drop with elevation, often resulting in snowfall even in the middle of summer. Hikers and tourists from all over the world come to this region to appreciate the striking mountains and its beautiful forests.

These snow-covered peaks are also a crucial part of America’s water supply, as the snowpack feeds major rivers like the Colorado River that provide drinking water to millions in the Southwest.

Image: Joshua Woroniecki

Stretching across the center of the country, the Great Plains is known for its fierce winds and severe weather, particularly tornadoes. Tornado Alley, which covers states like Kansas and Oklahoma, experiences more tornadoes than anywhere else in the world, thanks to the collision of warm Gulf air and cold Arctic fronts.

The region’s semi-arid climate also makes it prone to droughts, as seen during the infamous Dust Bowl of the 1930s. Despite these harsh conditions, the Plains are known as America’s breadbasket, producing massive amounts of wheat, corn, and soybeans that feed the whole nation.

Image: Raychel Sanner

The Southeast’s humid subtropical climate means long, hot summers with high humidity levels, often reaching over 90%. Frequent thunderstorms and hurricanes are also common in this area, with states like Florida and Louisiana bearing the brunt of some of the most powerful storms in U.S. history, including Hurricane Katrina in 2005.

The warm and wet environment fosters lush and thick vegetation where cypress trees, Spanish moss, and dense wetlands create unique ecosystems. The region is also known for its rich diversity of wildlife, which includes alligators, turtles, and numerous bird species.

Image: Michael Sanchez

Southern California's Mediterranean climate features mild winters and hot, dry summers, with Los Angeles receiving an average of just 15 inches of rain annually. This climate has made the area a global hub for agriculture, especially in the Central Valley, where crops like almonds, avocados, and citrus thrive.

The sunny weather also makes California a popular tourist destination, attracting millions to its beaches and outdoor activities. However, this climate also brings challenges, such as frequent droughts and devastating wildfires that can sweep across the dry landscape.

Image: Spencer DeMera

The Pacific Northwest is famous for its temperate rainforests, with areas like the Hoh Rainforest receiving over 140 inches of rain annually. This constant rainfall supports some of the largest and oldest trees in the country, including towering Douglas firs and redwoods.

While the cool air and consistent moisture nourish its rainforests, it also contributes to cloudy skies that block sunlight for much of the year. This prolonged overcast weather is linked to a high incidence of seasonal affective disorder (SAD), as the lack of sunlight affects mood and energy levels for many residents.

Image: Dave Hoefler

The Florida Keys are one of the only regions of the U.S. with true tropical climate, with warm temperatures year-round and rainy and dry seasons rather than the traditional four seasons. Key West, the southernmost point in the country, never experiences freezing temperatures, making it a popular escape during the colder months.

While the tropical breezes make for a laid-back island vibe, the area is also vulnerable to hurricanes, which have historically caused significant damage. Yet, the Keys’ coral reefs, the only living coral barrier reef in the U.S., attract divers from all over the world to explore its colorful marine life.

Image: Hector Falcon

The Appalachian Mountains have a temperate climate with heavy rainfall, often shrouded in fog, especially in the Great Smoky Mountains. But the iconic fog of this region isn’t just moisture; it’s actually caused by volatile organic compounds released by the dense forests. These compounds then mix with moisture and sunlight, creating the characteristic blue-tinged haze that gives the Smokies their name.

This consistent moisture also supports the rich biodiversity of the region. The thick forests, often cloaked in mist, provide an ideal environment for countless plant and animal species, making it one of North America's most ecologically diverse areas.

Image: Rachel Davis

New England’s cold, snowy winters have been immortalized in literature and art, and it’s no wonder—states like Maine and Vermont regularly see seasonal snowfalls exceeding 100 inches!

Blizzards and nor’easters are common, with storms bringing fierce winds and heavy snow, sometimes leaving towns isolated for days. The region’s long winters are perfect for skiing, and it is home to some of the oldest ski resorts in America, such as Stowe in Vermont.

Image: Robert Thiemann