Britain's Kate, Duchess of Cambridge, accompanies Queen Elizabeth II and Prince Philip, not pictured, arrives at Baker Street underground station in London for a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)
Gallery: British royals at subway station, zoo
Mar. 20, 2013 @ 01:40 PM
British royals visited a subway station and a zoo among events this week.