First lady Michelle Obama (R), joined by daughters Sasha Obama (C) and Malia Obama, is presented with the official White House Christmas Tree on November 25, 2011 in Washington, DC. The tree, a 19-foot-tall balsam fir, was grown on Schroeder's Forevergreens farm near Neshkoro, Wisconsin. (Photo by Brendan Hoffman/Getty Images)

The interior of the ship's bridge on the yacht Galeb is seen in the port city of Rijeka, December 16, 2015. Rijeka announced plans to convert the yacht Galeb used by Yugoslavia's communist leader Josip Broz Tito into a floating museum moored in the city's harbour. Now in disrepair, the 117-metre ship was an iconic symbol of luxury and used by Tito from the 1950s until his death in 1980 to entertain world leaders and celebrities, including the likes of Khruschev, Gaddafi, Indira Gandhi, Elizabeth Taylor and Richard Burton. (Photo by Antonio Bronic/Reuters)