A bill to designate the Broadway/Times Square Theatre District in the City of New York as a national historic site, and for other purposes.

Designates the Broadway/Times Square Theater District in New York as the Broadway/Times Square Theater District National Historic Site. Requires the United States to provide assistance in the preservation of the historical, cultural, and architectural character of the site and in its restoration, upgrading, and maintenance.

Directs the Secretary of the Interior acting through the National Park Service to designate theater preservation sites and other appropriate real property within the site as national historic landmarks if they meet the criteria for national historic landmarks.

Prohibits the demolition or alteration of real property located within the site unless such demolition or alteration contributes to the preservation, restoration, or enhancement of the site for traditional legitimate theater purposes.

Requires the Secretary to provide technical assistance to carry out this Act. Authorizes the Secretary to provide property owners within the site with emergency assistance in preserving or protecting their property.

Establishes the Broadway/Times Square Theater District Preservation Commission to provide advice on the actions that can be taken and the policies that can be applied in carrying out this Act.