Dominating La Seu d'Urgell's old town on the southern side of Plaça dels Oms is the 12th-century Catedral de Santa Maria. This pale sandstone cathedral complex is one of Catalonia’s outstanding Romanesque buildings. Its neat cloister is rich in characterful carved capitals depicting mythical beasts and grimacing gargoyles. The superb attached museum (which follows the cathedral's opening hours) has a wealth of Romanesque frescoes from various churches, as well as a copy of the 10th-century Beatus de Liébana , king among medieval illustrated manuscripts.
Adjacent to the cloister is the 11th-century Romanesque Església de Sant Miquel , rougher-hewn and pleasantly free of adornment.