Ticket to Explore JPL
The response to JPL's Open House event has become so great in recent years that attendance has maxed out, leading JPL to make the annual free event a ticketed one. Timed tickets are distributed in a mad internet dash several weeks in advance.
Those lucky enough to score tickets get an inside look at the Jet Propulsion Lab, with an up-close look at space exploration and a chance to meet the scientists and engineers who make it all happen. Plus 3-D movies, multiple spacecraft on display, historical building to walk thru and more. There is a limit of 5 tickets per requestor.
If you're bringing a smartphone or tablet, you can check out the map of exhibits and activities on the free web-based app (The app currently shows 2018 info).
Photo courtesy of NASA's Jet Propulsion Lab