I didn't plan for it to work out this way, but a business visit to Querétaro, Mexico coincided with Día de los Muertos. A colleague and I took a walk through the downtown plazas, which were an amazing blend of sights, tastes, and aromas. It was a tremendous amount of fun. I took quite a few pictures; you can find the Flickr set here.
Cleanliness is next to impossible.