Opposite the National Art Museum is the Palacio de Minería, where mining engineers were trained in the 19th century. Today it houses a branch of the national university’s engineering department. A neoclassical masterpiece, the palace was designed by Tolsá and built between 1797 and 1813. Visits are by guided tour only.
The palace contains four meteorites that struck northern Mexico, one weighing more than 14 tons. There's also a small museum on Tolsá’s life and work, which was under renovation at last visit.