The reflecting pool is actually a fountain that didn't happen to be on. As with many of the fountains at Caltech, this one has a theme: the many arching jets connect to patterns set in the tile to form a double helix.

Taken with a Sony DSC-P7 resting directly on the concrete lip of the pool. I let the camera do its night-shot mode where it took a second exposure with the shutter closed to subtract off the hot pixels. This is otherwise straight off the camera without any further post processing.