When we went to Imperial Beach this summer I decided to look at our memberships to see what we could do for free or low cost while on vacation. If you have a Desert Botanical Gardens membership you can vist the San Diego Botanic Gardens for free. If you have small children or just love enjoying nature I highly recommend these botanic gardens. They had two different kids gardens. One was more appropriate for toddlers and the other was fun for kids of all ages (even Matt.) There was a miniature railroad to view, dirt to dig, a treehouse to climb, a music garden, and lots of green (yea I live in the desert so I get excited about green.)