It's a unique experience to be atop a double-decker bus exploring the beautiful city of Philadelphia, and the Philadelphia Sightseeing Tours. Inc. offers you that and much more. The tour takes you through the winding streets of the city while introducing you to various gems like The Mutter Museum, The Eastern State Penitentiary, Academy of Natural Sciences and many more. They also offer night tours for those who wish to get to know Philadelphia under a canopy of stars. Their tour guides are very well-informed and they answer all your questions with enthusiasm.