One of the two massive electrical generator rooms at Hoover Dam.
Detail of the dam that impounds Lake Lavon, Texas.
A clock reminding that the west side of Hoover Dam along the Arizona/Nevada border is in the Pacific Time Zone rather than Mountain Time.
A storm approaches the Galveston Seawall, which was built between 1902 and 1904 as protection from future hurricanes after the devastation brought about from the 1900 hurricane that killed at least 6,000 people on the island.
Bridges over US-75 on the President George Bush Turnpike, Plano, Texas.
A rock retaining wall and electrical tower next to downstream face of Hoover Dam.
Looking down the 221 meter (726 ft.) tall Hoover Dam on the Colorado River at the border of Nevada and Arizona.
The two 395-feet-tall water intake towers rise out of the water on the Nevada side of Hoover Dam. Two nearly-identical towers are also on the Arizona side.