Launched in 1953, the year of Queen Elizabeth II's coronation, the Royal Yacht Britannia was used by the royal family for state visits, holidays and diplomatic functions for more than four decades. After it was decommissioned at the end of 1997, it was left in permanent residence in Leith, where it's consistently drawn big crowds. Since the 2009 addition of the Royal Deck Tea Room, you can even linger a while with tea and cake.
Although the ship's exterior has an art deco beauty, stepping on board - enter from the second floor of Ocean Terminal, through the Britannia Experience - is like regressing into a 1950s nightmare of suburban taste. You'll get to see the large state dining room, which has entertained everyone from Gandhi to Reagan, and the engine room, favoured more by grease monkeys. The many photographs of the royals, dating back more than 50 years, give a top-down flavour of British social history in the second half of the 20th century.