The best things to see are the amazing aqueduct and the converted Augustine convent. There are also a couple of lovely squares and gardens for relaxing and eating in.
Queretaro is a large industrialised city with poor air quality. The centro has narrow winding cobblestone lanes and some lovely old buildings, not that different from San Miguel de Allende which we had just left but the surrounding area is a very large and prosperous looking city. When we were there National Geographic were setting up a display of their photography exhibition which indicated an active tourist authority.
A lovely colonial and Aztec city, up into the foothills of the Sierra Gordas, one of the richest and best-educated in Mexico, and easily the cleanest and safest.
A fantastic place. I've decided to move here permanently.
Queretaro is one of my favorite cities in Mexico. Its a nice lovely city with much less traffic than D.
F. for example. The historical city center is perfect for walking around, go shopping, dining in various fantastic restaurants or have a drink in a bar. The people are very nice and helpful. From Queretaro you could also start a day trip the the beautiful landscape surrounding the city. Queretaro also offers various different nightlife opportunities.