MARCO doesn't appear to have or show any permanent collections, but it is a beautiful museum…read morebuilding with a captivating layout-design that houses excellent exhibits. Most of the ones I've seen here have been from Mexican artists, but not all of them. Many of the exhibits that come through here go on display at other museums in Mexico, as well, like a tour.
Sometimes the museum is calm and relaxing; other times the staff seem overly vigilant and assertively make sure you follow the "right path" to view the art.
The museum store carries some excellent books on exhibits that have been hosted at MARCO. It also carries some regional, artisan clothing and gift items.