2. Grand Canyon

An unforgettable view. To see the Grand Canyon for the first time is an experience few people will forget. The canyon vista — with its incomprehensible size, deep color, and rich display of rock layers — is unmatched by any natural display on Earth. But while the rock formations may seem arid and lifeless, the Grand Canyon is home to an astounding variety of creatures. In its mile-deep plunge, the Grand Canyon’s terrain ranges from conifer forest to desert, with river niches in between.