The port, which is immensely important for the USA, and the oil and gas industry characterize the industrial image of what is by far the largest city in Texas and the fourth largest city in the United States behind New York City, Los Angeles and Chicago. If you are interested in modern works of art, you will find them in many places downtown. NASA’s Space Center is a must for anyone interested in space travel; the Apollo 13 crew’s phrase “Houston, we have a problem” is also legendary in Germany.