I stumbled upon this little gem of a museum/church/gallery, in the heart of the barrio de Santa Cruz. Entry is free on Sundays from 4pm - 8pm and you can enjoy one of the best preserved typical Seville constructions - patio and fountain. To the left is a small room housing paintings from Sevillano painters, including Velázquez. On the other side of the patio, behind a dark wooden door is the biggest treat, the church. Unlike any other I have entered in Spain, it is decorated with ornate, colourful imagery on the walls and ceiling.
Plaza Venerables, 8
41004 Seville, Spain
+34 954 564 595
focus.abengoa.es/ingles/index2.htm