U.S. Secretary of the Interior Deb Haaland announced this week that the Boulder County Courthouse in Colorado has been designated a National Historic Landmark for being the site of the first issuing of a same-sex marriage license in the United States. On March 26, 1975, Boulder County Clerk Clela Rorex issued the license after confirming with the assistant district attorney that state law did not ban marriage between two people of the same sex. “This act of courage ignited a nationwide conversation about marriage equality and cemented the courthouse’s role as a symbol of hope and progress for the LGBTQ+ community,” the Boulder County Board of Commissioners wrote in a press release. “Within weeks, Rorex issued five more same-sex marriage licenses, and news outlets across the country spotlighted Boulder as a trailblazer for civil rights.”