Go ahead. Run up the Philadelphia Museum of Art's famous "Rocky" steps, but don't stop there. Inside is one of America's best collections of Renaissance, Impressionist, American and Modern art. Nearby, the Franklin Institute Science Museum's newly restored walk-through Giant Heart beats again with hands-on dispaly to explain scientific concepts to adults and children.

Cross the street — and thousands of millennia — to visit The Academy of Natural Sciences, an all-ages natural history playground, where you can dig for dinosaur bones, climb inside a Tyrannosaurus rex skull and tinker with other hands-on exhibits.

Visit the Philadelphia CultureFiles for more about Philadelpphia's expansive arts and cultural attractions.

You should also check out the Attraction Database of the Philadelphia Convention and Visitors Bureau.