Odessa is a member of the World Federation of Twinned Cities. Of all Ukrainian cities, it has been twinned with the greatest number of cities around the world (17): Alexandria (Egypt), Baltimore (USA), Calcutta (India), Genoa (Italy), Haifa (Israel), Liverpool (Great Britain), Marseilles (France), Oulu (Finland), Tripoli (Libya), Valencia (Spain), Vancouver (Canada), Yokohama (Japan) and others. Odessa is constantly hosting exhibits, symposia, and conferences. It is the site of consulates and trade commissions of many countries, and dozens of branches of friendship and cultural exchange societies are active in the city. Many roads lead to Odessa, for this city is hospitable, cheerful, and picturesque. Every year approximately 100,000 tourists visit Odessa, attracted by its boulevards and Potyomkinsky stairs, beautiful beaches, numerous new structures and the unusual architecture of old Odessa.