that time. Planned office towers were canceled, including California Plaza Three. 21st century adaptive re-use A sign of the success of the downtown renaissance was the lower office vacancy rate for the fourth quarter of 2004 at 16%, compared to 19% for 2003, and 26% for 1999. Affordable housing While developers are primarily building market-rate housing on Bunker Hill today, Los Angeles has very strict laws, rules, and ordinances established that promote the inclusion of all income levels into the residential mix. Some examples include incentives for the creation of affordable housing (rather than market-rate housing), the preservation of existing affordable housing, the development of affordable housing by the city itself (rather than waiting for private developers), and others. The city has written documentation regarding the development of affordable housing. On the topic of building affordable housing for very low-income to moderate-income, Principal City Planner Jane Blumenfeld said, "We are trying to make it attractive to build [downtown] and get this added affordable housing that we normally wouldn't have. We need an adequate amount of lower income housing so that in 20 years Downtown doesn't become an exclusive neighborhood." The Emerson apartment building, owned by the Related Companies, has 271 units, of which 216 are leased at market rates. The other 55 units are at subsidized rates to tenants whose annual incomes are less than 50% of the local median, which was $42,700 for a family of four in 2014. Notable features Library Steps The double stairway public art installation Library Steps was designed by Lawrence Halprin in 1989. It physically and symbolically connects the main entrance of the Los Angeles Public Library at Fifth Street with Hope Place and the Kechum-Downtown YMCA to the north. The double stairs flank a cascading river rock "stream" that flows from the pool surrounding Robert Graham's 1992 public art sculpture Source Figure, and terminate at Fifth Street with a fountain element and seating. Angels Flight tramway The 1902 Angels Flight funicular tramway/railway, originally connecting Hill Street and Olive Street, was rebuilt and relocated in 1996 to connect Hill Street with California Plaza. Public venues Contributing to the resurgence of Bunker Hill has been the construction of public venues, such as Walt Disney Concert Hall and the Museum of Contemporary Art. The Broad modern art museum opened next to Disney Concert Hall on September 20, 2015. In popular culture Video Games The 2011 Video