The view of a waterfall splashing into the Colorado River in the rocky Grand Canyon. Located in Arizona, the Grand Canyon was carved by erosion from the Colorado River, which resultantly left the canyon an estimated 277 miles long, a mile deep, and up to 18 miles wide. Today, about two billion years of geological history has been exposed at the canyon.

The view of the Colorado River in its rocky home of Grand Canyon. Located in Arizona, the Grand Canyon was carved by erosion from the Colorado River, which resultantly left the canyon an estimated 277 miles long, a mile deep, and up to 18 miles wide. Today, about two billion years of geological history has been exposed at the canyon.

Providing security and access to both automobile and pedestrian traffic is handled differently along Las Vegas Boulevard and has changed over the years on the Strip. First installed in the 1990s, the pedestrian overpass has become commonplace and provides flow across the Strip without bringing automobile traffic to a standstill. This one connects Planet Hollywood and Cosmopolitan hotel and casinos.

Providing security and access to both automobile and pedestrian traffic is handled differently along Las Vegas Boulevard and has changed over the years on the Strip. First installed in the 1990s, the pedestrian overpass has become commonplace and provides flow across the Strip without bringing automobile traffic to a standstill. This one connects Planet Hollywood and Cosmopolitan hotel and casinos.

Providing security and access to both automobile and pedestrian traffic is handled differently along Las Vegas Boulevard and has changed over the years on the Strip. First installed in the 1990s, the pedestrian overpass has become commonplace and provides flow across the Strip without bringing automobile traffic to a standstill. This one connects Planet Hollywood and Cosmopolitan hotel and casinos.

Providing security and access to both automobile and pedestrian traffic is handled differently along Las Vegas Boulevard and has changed over the years on the Strip. First installed in the 1990s, the pedestrian overpass has become commonplace and provides flow across the Strip without bringing automobile traffic to a standstill. This one connects Planet Hollywood and Cosmopolitan hotel and casinos.

Providing security and access to both automobile and pedestrian traffic is handled differently along Las Vegas Boulevard and has changed over the years on the Strip. Since large casino properties, like Planet Hollywood as seen here, have done away with traditional sidewalks in an effort to entice tourist into their casinos, certain public access areas have been created.