If you stay in Guanajuato and are looking for a nice day trip, starting in the morning and returning to Guanajuato in the late afternoon - you can start by driving to Dolores Hidalgo. If you take a tour (and you can easily book one in Guanajuato) - they will probably suggest to visit on the way a nice Tequila and Mezcal factory. This is a nice opportunity to taste this 2 drinks which are very famous in Mexico and if you like it you can also by some to take back home. about an hour later you will arrive to -

Dolores Hidalgo - where the Mexican Independence Movement began. Here, on September 16,1810 Miguel Hidalgo, a priest, rang the bells of the Church and made the famous "grito"  (cry) of independence.  Hidalgo's statute stands at the Plaza Principal. Dolores Hidalgo has a Mexican ambiance. You can visit the Museo Casa Hidalgo, the church on the main plaza and just walk around and enjoy the sights.

Continue towards San Miguel de Allende but do not forget to visit the Talavera (ceramic) workshops along the road leading to San Miguel. Talavera is the handicraft signature of Dolores Hidalgo and known all over Mexico.

San Miguel de Allende   is a charming city, with light, colonial architecture and cobblestone streets.   If you do not wish to visit the so many sights there just wondering in the streets will be enough! The beauty of San Miguel will strike you as you approach!

The most famous sight is the Parroquia de San Miguel Arcangel, with its pink facade in a baroque stile with indigenous influence.

In the afternoon head back to Guanajuato (using a different road) back to Guanajuato which is about 1 hour from San Miguel.