The old but stylish Aranda de Duero is the main destination of the Ribera de Duero wine route. Its wines are excellent and its underground wine cellars are among the towns main attractions. Dating from the 13th to the 18th centuries, there are approximately 6 miles of these cellars underneath the town. As a matter of fact, this large but gorgeous town in the province of Burgos first became prosperous during the reign of Henry IV of Castile, in the late 15th century. Moreover, its outstanding architectural features include the 15th-16th century church of Santa María in the Isabelline Gothic style, with a south facade reminiscent of a huge altarpiece.