Pinterest Facebook Twitter Email Top 10 Attractions in Philly 03:14 Here's what to see when visiting Philadelphia -- the 'Cradle of Liberty.' Similar Topics: Travel Tips Travel's Best Related Videos Fun in Historic Philadelphia 02:19 Audubon's Mysterious Bird 02:42 Secrets of Einstein's Brain 02:04 The Real Rocky 03:09 The Original Siamese Twins 02:59 Amazing Robot From 1928 Draws 02:34 Liberty Bell Refuge 01:24 Million-Dollar Nickel 02:58 More Videos Century Inn Presidential Stay 02:07 Remembering Charles Dickens 02:13 Theremin's Amazing Invention 01:13 Deadly Legionnaires' Disease 03:45 See Shrunken Human Heads 04:00 Inside Capone's Haunted Cell 02:37 Vampire Killing Kit 02:54 Don Explains: PA Daily Numbers 00:33 Allegheny Arsenal Explosion 02:34 The Poison Squad 02:00 A Nearly Tragic Tale 02:51 Audubon's Masterpiece 04:28 Discovery of Vulcanization 03:06 Harnessing the Force 03:15 Too Heartbreaking to Bear 02:31 History of General Warren Inn 02:06 We Recommend Top 10 Most Haunted Places Top 10 Honeymoon Destinations Top 5 Spas in Palm Springs Where to Travel in June 10 Family-Friendly Activities in Chattanooga Top 10 Natural Wonders 10 Photos
