1./ Redwood Forest, California, USA (Photo from Wikipedia)
Most people know California's redwood forest as home of the tallest trees on Earth. Hyperion is the world's tallest tree.

2./ Monument Valley located on the Arizona-Utah state line (Coordinates: 36°59′N 110°6′W) is characterized by a cluster
of vast sandstone buttes

3./ The Red Rock Canyon National Conservation Area in Nevada is located about 15 miles (24 km) west of Las Vegas and visited by over 1 million visitors each year

4,/ Acadia National Park is a National Park located in the U.S. state of Maine. The park is home to some 40 different species of mammalian wildlife like black bears, beaver, coyote etc.

5./ Death Valley National Park is a national park in the U.S. states of Nevada and California. Death Valley is the hottest
and driest place in North America

6./ Everglades - the largest subtropical wilderness in the USA, an international treasure as well - a World Heritage Site and a Wetland of International Importance

7./ Yosemite Valley is a glacial valley in Yosemite National Park. Within the valley there are ten waterfalls over 500 feet high including the majestic Yosemite Falls. Video.

8./ Denali National Park and Preserve is a national park and preserve located in Interior Alaska, centered on Denali (Mount McKinley), the highest mountain in North America.

9./ Mammoth Cave National Park is situated in central Kentucky. This is the world's longest known cave system, with more than 400 miles explored.

10./ Hawaii Volcanoes National Park, Big Island, Hawaii. Hawaii Volcanoes National Park was designated as an International Biosphere Reserve in 1980 and a World Heritage Site in 1987.