Question: Porto Cathedral - The Porto Cathedral (Portuguese: Se do Porto) located in the historical centre of the city of Porto Portugal is one of the city's oldest monuments and one of the most important Romanesque monuments in PortugalThe current Cathedral of Porto underwent construction around 1110 under the patronage of Bishop Hugo and was completed in the 13th century but there is evidence that the city has been a bishopric seat since the Suevi domination in the 5th-6th centuries.The cathedral is flanked by two square towers each supported with two buttresses and crowned with a cupola. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Answer:
Building