Tulsa, the second largest city in Oklahoma in central America, has a population of about 400,000. It was originally a settlement of Indians. A large oil field was discovered in the early twentieth century. It is now the main center of the national petroleum industry. There are large oil refineries, oil production equipment factories and more than 800 oil-related companies and institutions. Known as the "World Oil Capital". The city has the University of Tulsa, the only top 100 American university in Oklahoma.
The city centre of Tulsa is very small. In addition to the high-rise buildings of the modern commercial center, there are also cathedrals, museums, and art centers that are standard in American cities. Although Tulsa Airport is small, it is still an international airport. 11th Street, which passes through downtown Tulsa, is the famous section of Route 66 in American history, with special signs.