The National Museum of African American History and Culture (NMAAHC), colloquially known as the Blacksonian, is a Smithsonian Institution museum located on the National Mall in Washington, D.C., in the United States. It was established in December 2003 and opened its permanent home in September 2016 with a ceremony led by President Barack Obama. Early efforts to establish a federally owned museum featuring African-American history and culture can be traced to 1915, although the modern push for such an organization did not begin until the 1970s. After years of little success, a much more serious legislative push began in 1988 that led to authorization of the museum in 2003. A site was selected in 2006, and a design submitted by Freelon Group/Adjaye Associates/Davis Brody Bond was chosen in 2009. Construction began in 2012 and the museum completed in 2016. The NMAAHC is the world's largest museum dedicated to African-American history and culture. It ranked as the fourth most-visited Smithsonian museum in its first full year of operation. The museum has more than 40,000 objects in its collection, although only about 3,500 items are on display. The , 10 story building (five above and five below ground) and its exhibits have won critical praise. History Early efforts The concept of a national museum dedicated to African-American history and culture can be traced back to the second decade of the 20th century. In 1915, African-American veterans of the Union Army met at the Nineteenth Street Baptist Church in Washington, D.C., for a reunion and parade. Frustrated with the racial discrimination they still faced, the veterans formed a committee to build a memorial to various African-American achievements. Their efforts paid off in 1929, when President Herbert Hoover appointed Mary Church Terrell, Mary McLeod Bethune, and 10 others to a commission charged with building a "National Memorial Building" showcasing African-American achievements in the arts and sciences. But Congress did not back the project, and private fundraising also failed. Although proposals for an African-American history and culture museum would be floated in Congress for the next 40 years, none gained more than minimal support. Proposals for a museum began circulating again in Congress in the early 1970s. In 1981, Congress approved a federal charter for a National Afro-American Museum in Wilberforce, Ohio. The museum, built and funded with private money, opened in 1987. In the early 1980s, Tom Mack (the African-American chairman of Tourmobile, a