Free Museum Admission and Family Activity Days,  Countywide - Multiple days throughout the month, days vary by museum. www.freemuseumday.orgTuesdaysHotel Del Walking Tour, Coronado - 10:30 am. Docent-led walking tour. Res. req’d. 619-437-8788Tues Nite Out (5-8pm), Hillcrest - Discount dining. www.fabuloushillcrest.comWednesdaysCoronado Heritage Walk, Coronado - Docent-led walking tour. Res. req’d. 619-437-8788Cajon Classic Cruise, El Cajon – 5-8 pm. Classic car show. www.downtownelcajon.com (April - Oct)ThursdaysTNT (Thursday Night Thing), Balboa Park - Street art, music, activities. www.mcasd.orgFamily Fun Nights, San Diego Botanic Garden, Encinitas - www.sdbgarden.org (June - Aug)FridaysHotel Del Walking Tour, Coronado - 10:30 am. Docent-led walking tour. Res. req’d. 619.437.8788Friday Live Music Nights, Del Mar Plaza – Free live entertainment. www.delmarplaza.comThe Dinner Detective, Downtown -  Murder mystery dinner show.  www.thedinnerdetective.comCruisin' Grand, Downtown Escondido – Car cruise &  fair. www.downtownescondido.com (May - Oct)Concerts on the Green, Downtown El Cajon - 6-8pm. www.downtownelcajon.com (May - Sept)Sights & Sips Sunset Cruises, Hornblower Cruises, Embarcadero - www.hornblower.com (May - Oct)SaturdaysFree Fishing Class, Lake Cuyamaca, Julian - 10-11 am. www.lakecuyamaca.orgHotel Del Walking Tour, Coronado - 2 pm. Docent-led walking tour. Res. req’d. 619.437.8788The Dinner Detective, Downtown -  Murder mystery dinner show.  www.thedinnerdetective.comSaturday Garden Tour, The Water Conservation Garden, El Cajon - Seminars. www.thegarden.orgFamily Science Day  (1-3pm), Fleet Science Center, Balboa Park - www.rhfleet.orgSights & Sips Sunset Cruises, Hornblower Cruises, Embarcadero - www.hornblower.com (May - Oct)SundaysWacky Science Sundays, Natural History Museum, Balboa Park - www.sdnhm.orgHotel Del Walking Tour, Coronado - 2 pm. Docent-led walking tour. Res. req’d. 619.437.8788Champagne Brunch Cruise, Hornblower Cruises, Embarcadero - www.hornblower.com  (May - Nov)Sunday Pipe Organ Concert, Spreckels Pavilion, Balboa Park - www.osorgan.comSunday Live Music Nights, Del Mar Plaza  – Free entertainment. www.delmarplaza.comThrough July 9Chinese Brush Painting Exhibit, San Diego Botanic Garden, Encinitas - www.sdbgarden.orgThrough August 31“Black Holes” Digital Show, Fleet Science Center, Balboa Park - www.rhfleet.orgThrough September 9Titanic: The Artifact Exhibition, Natural History Museum, Balboa Park - www.sdnhm.orgThrough January 1, 2013GROSSOLOGY: The Impolite Science of the Human Body, Fleet Science Center, Balboa Park - www.rhfleet.orgJune 1First Friday (5-9pm), El Cajon - Multi-cultural activities. www.downtownelcajon.comJune 1-3PENUMBRA: An Ode to Oceanside in a Time of War, Oceanside Museum of Art – www.oma-online.orgJune 1 through January 20, 2013The Horse, and Vavras Vision: Equine Images, Natural History Museum, Balboa Park -www.sdnhm.orgJune 2Rock n' Roll Marathon - 40+ bands, 26 stages, post-race concert. www.rnrmarathon.comDowntown Bus Tour  (10-11:30am) - Free parking for tour at Horton Plaza. www.ccdc.comEncinitas Rotary Wine Festival (5pm), SD Botanic Garden, Encinitas - www.encinitaswinefestival.comJune 2-3Fiesta del Sol, Solana Beach – Street fair, live music,  kid’s zone. www.solanabeachchamber.comWings Over Gillespie (9-4), Gillespie Field, El Cajon -  Airshow and festival. www.ag1caf.orgJune 3Strings in the Garden (4-7pm), San Diego Botanic Garden, Encinitas - Children’s recital. www.sdbgarden.orgJune 3 through September 30Summer Shakespeare Festival, Old Globe Theatre, Balboa Park - Three dynamic outdoor productions. www.oldglobe.orgJune 4Senior Monday Lecture “Changing How We Diagnose Alzheimer’s” & IMAX Film “The Human Body”, Fleet Science Center, Balboa Park - rhfleet.orgFull Moon Dinner Cruise, Hornblower Cruises, Embarcadero - www.hornblower.comTaste of La Mesa (5-8pm) - www.lamesachamber.netJune 6Grunion Run (10:45pm), Birch Aquarium at Scripps La Jolla – Res. req’d. www.aquarium.ucsd.edu“The Sky Tonight“ Planetarium Shows, Fleet Science Center, Balboa Park – www.rhfleet.orgJune 8 - July 4San Diego County Fair, Del Mar - www.sdfair.comJune 9Saturday Science Club for Girls “Ooey, Gooey & Gross” Fleet Science Center, Balboa Park - www.rhfleet.org2nd Saturday Art Walk, Downtown Escondido -  www.downtownescondido.comJune 9Family Day, San Diego Archaeological Center, Escondido -  www.sandiegoarchaeology.orgAsian Pacific Historic District Walking Tour, Chinese Historical Museum, Downtown - www.sdchm.orgJune 9-10KidsFest, Liberty Station, Pt. Loma  - Interactive family festival. www.kidsfestsandiego.comAnnual Inter-Tribal Pow-Wow, Mission San Luis Rey, Oceanside - FREE. www.slrmissionindians.orgJulian Gold Rush Days  - Festival. www.julianca.comJune 10Encinitas Environment Day (10-4), Cottonwood Creek Park - Free. Outdoor festival. www.eeday.orgJune 14Nature & Me Preschool Storytime, Natural History Museum, Balboa Park – 10:30am, www.sdnhm.orgJune 16SEA Days “Boundless Energy” (11am), Birch Aquarium, La Jolla – www.aquarium.ucsd.eduJune 17 - FATHER’S DAYBrats & Beers on the Bay, Maritime Museum -  Sail with Dad on the Californian. www.sdmaritime.orgFather’s Day Country Jam, Menghini Winery, Julian - BBQ, live entertainment. www.julianca.comIMAX® En Espanol  “To The Arctic,” Fleet Science Center, Balboa Park - rhfleet.orgFamily Drop-In Day, Museum of Art, Balboa Park -  Free w/admission. Kid’s activities http://www.sdmart.org/programs-events/family-programsJune 18History for Half Pints “Summer Jam-berry!” (10-11am), SD History Center, Balboa Park - www.sandiegohistory.orgJune 21Rods  & Woodies Classic Car Night (5:30-7:30pm), Downtown Encinitas - www.encinitas101.comSummer Solstice Celebration (5-8pm), Del Mar - 858-755-1179, www.delmarmainstreet.comJune 22Movies By The Lake “Happy Feet 2”, Santee Lakes -  Outdoor family film screening.. santeelakes.comJune 23Fairy Festival (10-1:30), San Diego Botanic Garden, Encinitas - www.sdbgarden.Street Fair and Chili Cookoff, Ocean Beach -  Free. Live music, art. www.oceanbeachsandiego.comJune 23-24La Jolla Festival of the Arts, UCSD East Campus – 9am–5pm. www.lajollaartfestival.orgScottish Highland Games, Brengle Terrace Park, Vista - www.sdhighlandgames.orgJune 24Taste of  Adams Avenue, Kensington/Normal Hts. - www.adamsavenuebusiness.comJune 29Ghost Hunting Tour (10:30pm), The Whaley House, Old Town - 90 minute tour. www.sohosandiego.orgJune 29 through July 1Pacific Lacrosse Festival - Del Norte HS & Rancho Bernardo HS, www.pacificlacrossefestival.com