The modern art movement in the country officially emerged in the 1950s, culminating in the establishment of an art society. Expressionism and surrealism, as well as calligraphic art are the popular forms of art in the country. Abstract expressionism has gained popularity in recent decades. Pottery-making and textile-weaving are also popular products that were widely made in Bahraini villages. Arabic calligraphy grew in popularity as the Bahraini government was an active patron in Islamic art, culminating in the establishment of an Islamic museum, Beit Al Quran. The Bahrain national museum houses a permanent contemporary art exhibition. The annual Spring of Culture  festival run by the Bahrain Authority for Culture and Antiquities has become a popular event promoting performance arts in the Kingdom. The architecture of Bahrain is similar to that of its neighbours in the Persian Gulf. The wind tower, which generates natural ventilation in a house, is a common sight on old buildings, particularly in the old districts of Manama and Muharraq.