Article Photos: Philly Flower Show offers glimpse of UK gardens 10/12

People attend a preview for the annual Philadelphia Flower Show featuring a replica of the Elizabeth Tower of the Houses of Parliament, at the Pennsylvania Convention Center in Friday, March 1, 2013, in Philadelphia. More than 270,000 people are expected to converge on the Pennsylvania Convention Center for the event, which runs through March 10. Billed as the world's largest indoor flower show, it's also one of the oldest, dating back to 1829. (AP Photo/Matt Rourke)