The Time Institute at Metropolis University. It is the foremost place in the United Planets for the study, application and research of time-travel and time-manipulation theory. Circadia Senius let Legionnaires of the Legion of Super-Heroes borrow time bubbles or other equipment when needed. He often asked them to do so when there was a chronological mystery to be solved they had to have good reason. The Institute was destroyed by the Time Trapper in early 2987. It was rebuilt by the Legion. In 2995; the Institute was destroyed when it was hit by a lunar fragment after the destruction of the moon.