Unión Suiza Barcelona. One of the the most prestigious jewellery firms in Spain. Visit their Barcelona store for exclusive, hand crafted jewellery collections. Also an extensive stock of top swiss watches including Patek Philippe, Rolex, Brequet, Omega and Bulgari. Two stores in Barcelona on Avenida Diagonal 482 on corner of Via Augusta, on Rambla Catalunya 17 and Gran Via 26.