There aren't really any tourist sites to visit in Sant-Antoni, with the exception of the charming eglésia, built around a pretty cobbled courtyard and dating from the 17th century. It was once equipped with cannons designed to deter pirate attacks. The church is particularly enchanting at sunrise and sunset, when its whitewashed walls are ablaze with warm colours.
Take a stroll along the harbour promenade, which stretches from Cala des Moro in the north to the promontory of Punta des Moli in the south. It's a very pleasant walk, punctuated by a myriad of cheerful bars, during which you can have fun counting the luxury yachts floating in the marina. There are also a number of boat companies operating from the port, organising sea excursions to explore the southern coves and the islet of Es Vedrà.