The U.S. Postal Service is celebrating the National Museum of African American History and Culture with one of the ultimate tributes—a Forever Stamp.

The stamp will be go on sale Friday, Oct. 13 in a ceremony at the museum on the National Mall.

“Black history is inseparable from American history, and the Black experience represents a profound and unique strand of the American story,” a news release from the USPS stated. “This stamp issuance recognizes the richness of that experience.”

RELATED: NMAAHC celebrates one year

The NMAAHC opened on Sept. 24, 2016 and is still one of the hottest (free) tickets in D.C. In its first year, more than 2.5 million people visited the museum. It attracts thousands of visitors a day and passes are quickly claimed months in advance. However, there is a way to get same-day passes.