It's one of the most popular attractions at the Smithsonian and it added an eye-catching item on Tuesday.
Michelle Obama's second inaugural ball gown is now on display at the National Museum of American History.
Nearly one year ago, Mrs. Obama wowed the crowds at the second inaugural ball wearing the ruby-colored chiffon gown, custom-made by Jason Wu - the same designer who crafted her 2009 inaugural ball gown.
Curator Lisa Kathleen Graddy said, "It is a beautiful dress isn't it? I love that red. It's such a vivid, celebratory color Where the first dress sparkled, this dress glistens. And it's that sheen off the velvet."
Mrs. Obama's Jimmy Choo shoes are also on display with the dress - notably with a much lower heel in 2013 than she wore in 2009.
The items are on loan from the White House, coinciding with the 50th anniversary of the National Museum of American History and the 100th anniversary of the Smithsonian's First Ladies Collection.
Over the years, the exhibit has changed in size, location and style, but the dresses have always been a popular attraction. For now, Mrs. Obama's 2013 fashion choice is the focal point of the exhibit.
Michelle Obama's second inaugural gown will be on display at the museum for one year. Then in 2015, it will go back to the White House and presumably end up in the Obama Presidential Library.
When that happens, the first inaugural gown will return to the First Ladies exhibit.