Since the contemporary construction photos have slowed down a bit, here's a 1910 panorama of the construction of Austin's original highrises:
http://www.helloaustin.com/Photos_Panoramic.Cfm
The intersection in the foreground is 6th & Congress. The Scarborough Building is being erected to the left; the cranes for the Littlefield Building are seen to the right. The completed mid-rise farther right is the Driskill hotel.