See the Cathedral of San Ildefonso, the second-oldest cathedral in the New World, begun in 1561 and completed in 1598. The tour includes the choir loft, the north bell tower, parts of the roof and other previously off-limits areas. Tickets sold inside the main doors of the cathedral.
NOTE: Costs are in pesos. Events are occasionally moved or canceled, or a listing could contain an error, so confirm with the organizer when possible.