Fifth Avenue by RD Riccoboni. The Gaslamp district, Downtown San Diego California. The historic Loring, Fritz and Spencer Ogden / DeLeval buildings on Fifth Avenue. Beacon Artworks Gallery is located inside beautiful Old Town San Diego State Historic Park amongst the oldest buildings in the western United States. Old Town San Diego is the birthplace of California and the perfect location to showcase the San Diego Art and studio of RD Riccoboni, one of America's favorite artists.