Medellín, officially the Special District of Science, Technology and Innovation of Medellín, is the second-largest city in Colombia after Bogotá. The city had an estimated population of 2,508,452 the metro area of Medellín is the second-largest urban agglomeration in Colombia (in terms of population and economy), with more than 4 million people. The city is promoted internationally as a tourist destination and is considered a global city type "Gamma +" by the Globalization and World Cities Research Network. The Medellín Metropolitan Area produces 67% of the Department of Antioquia's GDP and 11% of the economy of Colombia. Medellín is important to the region for its universities, academies, commerce, industry, science, health services, flower-growing, and festivals.