Art-Nouveau Style – This style, which influenced various art forms all over the world since the 1890s, appeared on Jerusalem’s urban scene only in the early 20th century. This decorative style highlights organic forms and ornamental motifs with curved asymmetrical shapes, mainly of floral and foliate nature. It is prevalent mostly in ironwork designs of gates, window grilles and balcony railings, mostly in Arab houses and villas, built in Talbieh and Katamon neighborhoods. Some Art-Nouveau designs, based on Jewish religious motifs, were introduced in Jewish Neighborhoods in North-West Jerusalem, such as Zichron Moshe and Mekor Baruch, built in the 1920s and 1930s. Art Nouveau is the least common of the 20th century styles in Jerusalem.