Chicago was the second most visited city in the United States with 55 million domestic and international visitors, not far behind the 62 million visitors to New York City in 2017.The city ranked first place in the 2018 Time Out City Life Index, a global quality of life survey of 15,000 people in 32 cities.Landmarks in the city include Millennium Park, Navy Pier, the Magnificent Mile, the Art Institute of Chicago, Museum Campus, the Willis (Sears) Tower, the Museum of Science and Industry, and Lincoln Park Zoo. Chicago's culture includes the visual arts, literature, film, theater, comedy (especially improvisational comedy), food, and music, particularly jazz, blues, soul, hip-hop, gospel,and electronic dance music including house music. Of the area's many colleges and universities, the University of Chicago, Northwestern University, and the University of Illinois at Chicago are classified as "highest research" doctoral universities.