Castle of Montbui Monument · Bigues i Riells del Fai, Vallès Oriental, Barcelona A castle situated at 541 meters above sea level in the municipality of Bigues i Riells del Fai (Vallès Oriental, Barcelona), documented since the year 987. It combines Romanesque and Gothic elements; today only some walls are preserved, with the trapezoidal floor plan visible and the north wall relatively well preserved. It first belonged to the Besora family, passed to the bishopric of Barcelona in 1240, which rebuilt it in 1308, and later to the Council of One Hundred in 1490 and to the Bourbon crown in 1714. It fell into ruin around 1833 and was declared a historic monument in 1949. Photo: Gustau Erill i Pinyot (CC BY-SA 3.0) What to see and do in Bigues i Riells del Fai