1. Grand Canyon National Park
HISTORY: More than 270 miles long, 18 miles wide, and a mile deep, this vast canyon is known throughout the world for its size and beauty.
2. Mount Rushmore National Memorial
HISTORY: It took 14 years and a team of 400 sculptors, led by Gutzon Borglum, to complete this massive "Shrine of Democracy," dedicated in 1941.
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