San Juan del Río It is a city and head of the homonymous municipality in the state of Querétaro has a population of 268,406 inhabitants. Due to the accelerated growth of the city and the proximity to Tequisquiapan, on January 27,2016 the Metropolitan Area of San Juan del Río was declared, which has a population of 349,350 inhabitants. San Juan del Río is an important industrial enclave in the vicinity of the capital city. In the same way, it has an increasing number of tourist attractions. Many of the hotels in this municipality are housed in luxurious colonial ex-colonies. It was also a key point in the historical development of the country and also has a peculiar museum: the Museum of Death.
This enclosure is located in an old cemetery and hosts 450 tombs as well as a panoramic view of the city. It is one of the largest opal producers in the country, the oldest mines are located near the limits of the neighboring municipality of Tequisquiapan. San Felipe and La Carbonera, the most important in the region. In 2010, the historic center of the city was declared a World Heritage Site as part of the Camino Real de Tierra Adentro complex.