and public and commercial financial support. By mid-2014, Accelerator, a biotech investment firm, had raised more than US$30 million from investors, including Eli Lilly and Company, Pfizer, and Johnson & Johnson, for initial funding to create biotechnology startups at the Alexandria Center for Life Science, which encompasses more than on East 29th Street and promotes collaboration among scientists and entrepreneurs at the center and with nearby academic, medical, and research institutions. The New York City Economic Development Corporation's Early Stage Life Sciences Funding Initiative and venture capital partners, including Celgene, General Electric Ventures, and Eli Lilly, committed a minimum of US$100 million to help launch 15 to 20 ventures in life sciences and biotechnology. In 2011, Mayor Michael R. Bloomberg had announced his choice of Cornell University and Technion-Israel Institute of Technology to build a US$2 billion graduate school of applied sciences on Roosevelt Island, Manhattan, with the goal of transforming New York City into the world's premier technology capital. Tourism Tourism is vital to Manhattan's economy, and the landmarks of Manhattan are the focus of New York City's tourists, enumerating an eighth consecutive annual record of approximately 62.8 million visitors in 2017. According to The Broadway League, for the 2018–2019 season (which ended May 26, 2019) total attendance was 14,768,254 and Broadway shows had US$1,829,312,140 in grosses, with attendance up 9.5%, grosses up 10.3%, and playing weeks up 9.3%. Real estate Real estate is a major force in Manhattan's economy. Manhattan has perennially been home to some of the nation's, as well as the world's, most valuable real estate, including the Time Warner Center, which had the highest-listed market value in the city in 2006 at US$1.1 billion, to be subsequently surpassed in October 2014 by the Waldorf Astoria New York, which became the most expensive hotel ever sold after being purchased by the Anbang Insurance Group, based in China, for . When 450 Park Avenue was sold on July 2, 2007, for US$510 million, about US$1,589 per square foot (US$17,104/m²), it broke the barely month-old record for an American office building of US$1,476 per square foot (US$15,887/m²) based on the sale of 660 Madison Avenue. In 2014, Manhattan was home to six of the top ten zip codes in the United States by median housing price. In 2019, the most expensive home sale ever in the United States occurred in Manhattan, at a selling price of US$238 million,