History is all around you as you explore London.  In the span of an afternoon you can enjoy a leisurely stroll from Westminster Abbey and the year 1245, to the World War II years of the Churchill War rooms from 1939-1945.  Then enjoy a walk through the bucolic setting of St. James Park and end up back in 1837 at Buckingham Palace.  Take this walk or create one of your own.  Any area of London that you choose to explore on your free afternoons will be rewarding.  So, grab your Rick Steves' guide book, open up the map, choose a direction,  and see what wonders you discover.