Directly behind Iglesia de San Juan de Dios, the Baluarte de San Pedro served a post-piracy defensive function when it repelled a punitive raid from Mérida in 1824. Carved in stone above the entry is the symbol of San Pedro: two keys to heaven and the papal tiara. Climb the steep ramp to the roof and look between the battlements to see San Juan’s cupola. Downstairs, the Galería y Museo de Arte Popular displays beautiful indigenous handicrafts.