The Texas capital of Austin is perhaps its most unique city. It sits in a triangle defined by the larger cities Dallas, Houston, and San Antonio, near a famed area known as the Texas Hill Country. It is home to the University of Texas at Austin, one of the finest universities in the USA. It's also a major high-tech center, hosting headquarters for a number of large companies including Dell. Here, Patrick Nye gives us an aerial tour of this city on the Colorado River.