The important little fishing port town of San Blas, Nayarit Mexico has made definite progress over the last few years. The citizens have taken an immense pride in civic improvements to make San Blas a more pleasant place to visit and to live. The important little fishing port town of San Blas, Nayarit Mexico has made definite progress over the last few years. San Blas Market San Blas Market is located at one corner of the Central Plaza and is a great place to visit when you are hungry and thirsty. You can purchase prepared local dishes plus, fresh fruit and vegetables, fresh meat and fish, plus a wide variety of cool tropical fruit drinks. Purchases of fresh shrimp and fish can also be found just outside the market and around the the square. Shop or just enjoy the sights while you stroll in the shady plaza but don't set under the trees in the early morning or evening hours. The hordes of blackbirds called Sonates come home to roost.