The Casa do Infante (House of the Prince), or alternately as the Alfândega Velha (Old Customshouse) is a historical house in the civil parish of Cedofeita, Santo Ildefonso, Sé, Miragaia, São Nicolau e Vitória, in the municipality of Porto, in northern Portuguese.The house was originally built in the 14th century as customs and mint, although its present condition derives mostly from a remodelling carried out in the 17th century.