The museum includes 23 display rooms with a total floor space of 79,700 square meters (nearly 8 hectares) or 857,890 square feet (almost 20 acres). It is the largest cultural museum in Mexico and one of the largest in the Americas. The museum was founded in 1823 as an anatomical theater named "La Academia Mexicana". In 1848, it became a national monument. In 1990, it was given its current name. The building was designed by Italian architect Giuseppe Valadier and built between 1844 and 1847. Today, the museum houses more than 7 million objects that cover all aspects of Mexican culture from the beginning of human presence in Mexico to the present day. It is divided into seven departments: Pre-Columbian Art, Archaeology, Textiles, Folk Art, Ethnography, History of Mexico, and International Relations. The museum is open daily except Monday; admission is free. There are information centers located at each entrance of the complex where you can get a map and brochures in English and Spanish. The National Museum of Anthropology is near the center of Mexico City, on Paseo de la Reforma at Calle 16.