Author: Lane Simmons San Miguel de Allende has been a favorite among foreign retirees since the late 1960s. Nestled among low hills, this historic city is mostly flat at its center, making it very walkable. El centro San Miguel is also chock full of delights. The number and variety of first-class restaurants and fine shops per block is unmatched anywhere else in Mexico. Large hacienda-style houses have been divided into patio restaurants, coffee houses, cantinas and boutique