of Colombia, and the Colombian Institute of Culture, both of which support artists while striving to preserve Colombia's rich history. Having lost much of its influence, the CTC was supplanted by the Union of Colombian Workers backed by the Catholic Church and then by the Unified Central of Workers. Special mention should be paid to the "musical city" of Ibagué, which has contributed to the enrichment and dissemination of Colombian music. Most people, especially in urban centers, are married in the Catholic Church. Congress meets only twice a year but may be called for additional sessions by the president. More than 85 percent of Catholics in urban parishes attend mass regularly.
Many areas have had difficulty maintaining older structures, and the climate has destroyed many Baroque buildings. The high plateau is striped with tributaries of the Amazon River and rain forest to the south. Roscas have been successful in monitoring and controlling some social, political, and economic changes. However, when intermarriage takes place, it is generally white males who marry Indians or blacks. These groups are classified into three cultures: those in the interior, the countryside, and the coastal regions. Other significant exports are oil, coal, and bananas. In the countryside, Catholic practices and beliefs have been combined with indigenous, African, and sixteenth-century Spanish customs. The arts are supported through private individuals and foundations such as the Telefonica Foundation, the Chamber of Commerce of Medelln, the Tobacco Company of Colombia, Federation of Coffee Producers, and the Bank of the Republic of Colombia, which supports the world renowned Museum of Gold. Children Churches, like the one shown here in Anitoquia, are some of the last examples of Medieval or Renaissance architecture in Colombia. Colombia has great biodiversity with 1,550 species of birds and over 13,000 species of plants. White, mestizo, and mulatto men and women prefer conservative dark suits.