It's gross - but we loved it. Tucked away in an alley in downtown San Luis Obispo (on Higuera St, just North of Broad St), you'll find an alley coated on both sides in bubblegum. Folks have been putting gum on the walls here for decades. Bring some from home or stop into any of the nearby merchants (they have bubblegum machines). San Luis Obispo (called SLO by everyone) is 4:30 from Edwards, so combine this 20 minute diversion with a trip up the PCH or to Hearst Castle or wine country. Try this website for more pictures.