The ducal palace and its four towers Monument · Lerma, Arlanza, Burgos Image of Lerma, not of the place itself. Francisco de Sandoval y Rojas, favourite of Felipe III, raised it to designs by Francisco de Mora. He asked the king's licence for two towers without making clear that they would be two more than the usual, and ended with four; today it is a parador. Photo: Jose Luis Filpo Cabana (CC BY 3.0) What to see and do in Lerma