Omaha is a very diverse city, with everything from a Little Italy to a Little Bohemia. The city is definitely known for its zoo, containing the largest cat complex in North America, largest nocturnal and swamp exhibit in the world, and the world's largest indoor desert. Omaha is also home to the Joslyn Castle, which can be toured. Omaha has a rich history in rhythm and blues, and the Old Market district is great for nightlife. The city is great for bicyclists and hikers, with more than 80 miles of trail all over. The Durham Museum occasionally has traveling exhibits from the Smithsonian.