In 2003, Friends of the High Line sponsored a design competition that attracted more than 720 participants from 38 countries. Proposals included a sculpture garden, an elongated swimming pool, and a linear amusement park/campground. In July 2003, Edward Norton and Robert Caro hosted a benefit event at Grand Central Terminal, where the submissions for the design contest were exhibited. The same month, a bipartisan group of city officials began petitioning the federal Surface Transportation Board to hand over title to the viaduct for park use. In anticipation of this handover, the administration of Mayor Michael Bloomberg announced plans for a High Line park that September. The following year, the New York City government committed $50 million to establish the proposed park. Mayor Bloomberg and City Council speakers Gifford Miller and Christine C. Quinn were among the major supporters. Fundraising for the park raised a total of over $150 million (). The Surface Transportation Board issued a certificate of interim trail use on June 13, 2005, allowing the city to remove most of the line from the national rail system. Ownership officially passed from CSX to the city that November.
