The Tech has a large number of permanent exhibits on subjects ranging from medicine to robotics, but perhaps the best thing about the museum is that there is always something new to see.
Touring exhibits have featured the inventions (and artwork) of Leonardo Da Vinci, sets and props from Start Trek, and an interactive, hands-on MythBusters exhibit.
There’s also an IMAX theater which shows a rotating schedule of educational and commercial releases (e.g. Humpback Whales followed by Dark Knight).
The gift shop has a large selection of techy items and science toys.
The Tech Museum of Innovation
201 South Market Street
San Jose, CA 95113