Begun in the mid–12th century and finally consecrated in 1331, the cathedral spans the transition from Romanesque to Gothic architecture. It has a fortress-like quality, if for no other reason than it stands at the highest point of the city. The immense rose window of the main facade is balanced by the Gothic upper tier of the octagonal bell tower, where windows flood the interior with light. The most striking work of art in the church is the altarpiece dedicated to Santa Tecla, patron of Tarragona, carved by Père Joan in 1430. Two flamboyant Gothic doors open into the east end of the church, where you’ll find the Museu Diocesà, with a collection of Catalan religious art.