It's a day like no other. Spend it in Cal classrooms and labs, museums and performance halls, libraries, and arenas. Admission is free.

There's something for visitors of all ages. Check out highlights — including information for prospective students. Tips for visitors will help you plan your Cal Day experience.

Watch a slide show for a glimpse of the flavor of Cal Day 2009.

The complete program of Cal Day events will be available online after March 25.