It is most noteworthy as the place where Emperor Maximilian I and Generals Miguel Miramón and Tomás Mejía were executed, definitively ending the Second Mexican Empire and French intervention in Mexico.
In the 1950s, on the west slope of the hill, the Querétaro State Fairgrounds were constructed; the fair would later move to a new site in the early 1970s.
On May 15, 1967, the centennial of the arrest of Maximilian, a portion of the mountain, including the east side and the summit, was designated a national park, the same day as the inauguration of a statue of Benito Juárez and a new esplanade by President Gustavo Díaz Ordaz and Governor Manuel González Cosío y Rivera; the statue was designed and sculpted by Juan F Olaguibel.
[4] The base of the statue features an engraving of a quote by Juárez, Entre los individuos como entre las naciones, el respeto al derecho ajeno es la paz [es], or "Among individuals as among nations, respect for the right of others is peace".
[5] The municipal government of Querétaro operates a museum on the mountain, constructed in 2003 and featuring five permanent exhibit rooms.