Me and my husband are planning to go to San Luis Obispo. Please suggest things to do and places to visit.?

You could also post in Los Angeles since SLO is half way in between. You can visit Hearst Castle, San Simeon, and lunch at Morro Bay, and visit Cal Poly university. It is a nice little town. You are on the Central Coast. Paso Robles is within driving distance but I have no idea what visitors do in SLO.