Curitiba is the largest city in the prosperous Southern region, and its population is largely descended from German, Ukranian, Russian, Italian and Polish immigrants. The city is known to urban planners worldwide for its innovative public transit system.There is a great ''cidade velha'' (old city) in the center which is restored very well for its 314 years. There is a huge arts and crafts fair every Sunday in the old city that is well worth visiting. http://wikitravel.org/en/Curitiba