La Margineda Bridge    

Pont de la Margineda
The bridge of La Margineda crosses the river Valira along the old path uniting Sant Julià de Lòria to Andorra la Vella via Santa Coloma.

It is the largest and most slender of the mediaeval bridges in the Principality. It is 33 m long and its highest point is 9.20 m. The archstones are in pumice stone so as to keep the structure light and the walls are made mainly of the granite stones known as "valirenques" as they had been dragged down by the river Valira to the very place where the bridge now rises.