No one mentioned the Simeone car museum?? Best car collection I've ever seen.

Simeone Foundation Automotive Museum | One of the greatest collections of racing sports cars in the world.

If the Franklin Museum on Market St, you can visit Independence Hall, the Betsy Ross House, Elfreth's Alley are all nearby.

I am *near there all next week...of course the Phillies schedule does not permit and I miss the visiting Padres by a day. Damn it!

Art Museum, Liberty bell, Constitution Center, Independance Hall, Valley Forge, Longwood Gardens, If the weekend is nice take a drive to the shore, Cape May, Ocean City or Wildwood. Nice beaches and Wildwood, Ocean City have nice boardwalks that are starting to open.The aquarium in Camden is nice the USS New Jersey is right next to the Aquarium. Day time in Camden you will be OK. Just follow the signs.

If the kids arent very well behaved as you say I dont know that I would be taking them to NYC.