One of the main tourist attractions of Barcelona is the famous Sagrada Familia church which was designed by the great modernist architect Antoni Gaudi. The church is a UNESCO World Heritage Site. Despite the common knowledge, Sagrada Familia is not considered a cathedral because the church does not contain the seat of a bishop. Its real title is minor basilica and Barcelona’s cathedral is La Seu (Catedral de Santa Eulalia), another important church, which is also one of the must-see attraction to be visited by tourists who spend a few days in the Catalan city.