Contra Loma Regional Park & Swim Lagoon
1200 frederickson ln, 925 757-0404, (http://www.ebparks.org/pa...). a man made lagoon where swimming and fishing is allowed, alot of great trails and scenery to see as well.
Paradise Skate
Paradise Skate, 1201 W 10th St, 925 779-0204, (http://www.paradiseskate.com). An indoor skating rink to go skating around or for roller hockey.
Antioch Waterpark
4701 lone tree way, 925 776-3070, (http://www.ci.antioch.ca....). a waterpark that is fun for people of all ages, has a variety of slides and pools.
Golf and Games Inc
501 auto center dr, 925 754-5053, (http://www.golfngames.com). a great place to take the kids has minitaure golf, go-karts, batting cages and alot of video games to play. currently closed due to bankruptcy, but may be reopening soon.
Events
Contra Costa County Fair
Contra Costa County Fair, (http://www.contracostafai...). Your typical county fair held at the Antioch Fairgrounds, dates change usually year to year, so check website for dates.