Es Baluard started life as a Renaissance fortress. The Baluard de Sant Pere was built to guard the sea approach to Palma's walled city. It watched over the fishermen, sailors and ship carpenters of the Sant Pere quarter below. That working waterfront neighbourhood, where sails were sewn in open courtyards and nets dried on salt-worn walls, is still visible around it.

Today the bastion houses the Museum of Contemporary Art. On its open-air terrace, sculptures by Joan Miró, Santiago Calatrava and Susana Solano sit against the skyline, with Palma Bay spreading out beyond the old ramparts. Calatrava's contribution is a stylised white steel bull poised as if about to leap over the city.

VoiceMap's tours climb through Sant Pere to reach the museum, tracing the neighbourhood's shift from medieval maritime quarter to contemporary arts destination.