Founded in the 18th century, San Blas served as the starting point for several important expeditions during the colonial period. The city was also a major trading spot where the first customs house of New Spain was built – Maritime Customs House – a structure that now stands as a tourist attraction of great significance. Other places of historical interest include the Port Captain, the Cerro de la Contaduria, the remains of the Church of San Basilio and the Antigua Contaduria, the former accountant’s house.

San Blas has beautiful beaches with fine sand, subtle slopes and gentle waves, perfect for lounging, sailing, kayaking, swimming, diving and water-skiing. Travelers can sail or kayak along the canals adorned with lush vegetation and head to the estuaries near La Tobara, El Conchal, El Pozo and Singaita. Some of the most popular beaches include Playa del Rey, Playa del Borrego, Playa las Islitas, Bahia de Matachen, Los Cocos, Aticaza (a former refuge for pirates), and Playa Miramar. Other natural attractions in the city include El Rey, Los Cocos and El Borrego.

The waters of San Blas are also perfect for sport fishing, with sailfish, mahi mahi (dorado) and marlin among the many species in the area. An international fishing tournament is also hosted in the city every year in May.

Shopping is another major attraction in San Blas. Travelers can choose from a wide selection of textiles, embroidery, earrings, bracelets, woven panels, dresses, masks with glass beads, basketwork, traditional crosses and decorative shell work from the local street vendors and shops in the area.

While the city offers a variety of water and outdoor activities, its greatest charms are its serenity and unique cuisine, both favorites among Mexican and international travelers alike. Cuisine in San Blas is very unusual and of particular interest to those attracted to experimenting new tastes. Local specialties include sopa marinera, a soup made from seafood, iguana steak, smoked mullet and fried fish. However, while several restaurants in San Blas offer local specialties and are a great option for a night cap and a pleasant dinner, most visitors prefer the beach for a traditional night bonfire.