Martin's Tavern was one of the first bars to open in Washington after Prohibition ended in 1933, and it's remained a family-run corner saloon ever since. Due to its location in the heart of Georgetown, the tavern has been a haunt for politicians and celebrities, including presidents John F. Kennedy and Lyndon Johnson.

Martin's Tavern has been owned by three generations of the Martin family, all named William. (2004 photo by Michael Temchine for The Washington Post)

Since this year is the 80th anniversary of the opening of Martin's, there will be celebrations and specials throughout 2013. Mayor Vincent Gray will attend tonight's anniversary kickoff party, which features free classic cocktails and slow-roasted beef from 6 p.m. to midnight. RSVPs are mandatory, so e-mail or call the restaurant to get your name on the list.