Santa Coloma de Gramenet (informally simply known as Santa Coloma; historically also known as Gramenet de Besòs) is a city in Catalonia, Spain. It is situated on the south-east side of the Litoral range, with the Puig Castellar (299 m) as its highest point, on the left bank of the Besòs river: the municipalities of Sant Adrià de Besòs and Badalona  separate it from the coast. It is essentially a suburb of Barcelona.