This facility, located next to the Plaza of the Four Winds, has recently been renovated to serve as an auditorium and multi-purpose room with excellent acoustics and a seating capacity of 80 persons. It has a kitchen, bathroom and storeroom as well as running water and electricity. The Dome is well equipped for meetings, talks, workshops, projections, ceremonies, temporary exhibitions and other activities, and of course, the annual vigil of the Festival of the Holy Cross of El Charco del Ingenio.