The town layout shows how uneven the ground is at the foot of the imposing synclines.  Its streets have a Mediaeval flavour, thanks to the use of stone, the window ledges and the coats of arms over the doors.  In the town centre, apart from the Romanesque parish church dedicated to San Salvador and the sacred art museum in its crypt, Agüero also has an organ museum.  The Romanesque church of Santiago, of considerable architectonic and historical value, is in a really splendid spot on the outskirts.