The oldest wooden house in San Diego houses the Gaslamp Quarter Historical Foundation, the district's curator. Before developer Alonzo Horton came to town, Davis, a prominent San Franciscan, had made an unsuccessful attempt to develop the waterfront area. In 1850 he had this prefab saltbox-style house, built in Maine, shipped around Cape Horn and assembled in San Diego (it originally stood at State and Market streets). Ninety-minute walking tours of the historic district leave from the house on Saturday at 11 am and cost $15. If you can't time your visit with the tour, a self-guided tour map is available for $2.