Arcaded Main Square of Serón Monument · Serón de Nágima, Las Vicarías, Soria Image of Serón de Nágima, not of the place itself. The main square preserves sixteenth-century buildings with porticoes on stone columns, while the rest of the settlement is raised in adobe and rammed earth, the building technique that dominates the whole Nágima valley. Photo: Dgarcia29 (CC BY-SA 3.0) What to see and do in Serón de Nágima