with bigger exhibition spaces, better locations, and stronger connections to museums and collectors. Wall Street money and funds from philanthropists flow steadily into the art market, often prompting artists to move from gallery to gallery in pursuit of riches and fame. Enriching and countering this mainstream commercial movement is the constant flux of underground movements, such as hip-hop art and graffiti, which engendered such artists as Keith Haring and Jean-Michel Basquiat, and continue to add visual texture and life to the atmosphere of the city. Long Island City, Queens is a rapidly flourishing art scene in New York, serving as home to the largest concentration of arts institutions outside of Manhattan. Its abundance of industrial warehouses provide ample studio and exhibition space for many renowned artists, museums and galleries. Public art New York has a law that requires no less than 1% of the first twenty million dollars of a building project, plus no less than one half of 1% of the amount exceeding twenty million dollars be allocated for art work in any public building that is owned by the city. The maximum allocation for any site is $400,000. Many major artists have created public works in the city, including Jeff Koons, Louise Bourgeois, Nam June Paik, and Jim Power the "Mosaic Man." Anish Kapoor's Sky Mirror, a highly reflective stainless steel dish nearly three stories tall, was on view at Rockefeller Center in September and October 2006. In 2005 Christo and Jeanne-Claude installed The Gates, a site-specific art project inspired by traditional Japanese torii gates. The installation consisted of 7,503 metal "gates" along 23 miles (37 km) of pathways in Central Park. From each gate hung a flag-shaped piece of saffron-colored nylon fabric. The subway system also hosts several public art projects, including intricate tile mosaics and station signage. Subversive public art trends have also coursed through New York. Toward the end of the 1960s the modern American graffiti subculture began to form in Philadelphia, south of New York. By 1970, the center of graffiti innovation moved from Philadelphia to New York, where the graffiti art subculture inspired an artistic style and social philosophy dubbed "Zoo York." The name originated from a subway tunnel running underneath the Central Park Zoo that was the haunt of very early "oldschool" graffiti writers like ALI (Marc André Edmonds), founder of The Soul Artists. The subway tunnel became a scene where crews