Philadelphia

Here's an ideal itinerary for 1 day in Philadelphia that is family-friendly and historic:

Morning: Start your day by visiting the Independence National Historical Park, which is home to some of the most iconic landmarks in American history. You can take a guided tour of Independence Hall, where the Declaration of Independence and the US Constitution were both signed. You can also visit the Liberty Bell, which is a symbol of American independence and freedom.

Afternoon: After exploring the Independence National Historical Park, head over to the Philadelphia Museum of Art. This museum is home to an impressive collection of art from around the world, including works by famous artists like Vincent van Gogh and Pablo Picasso. Don't forget to run up the famous "Rocky Steps" and take a photo with the statue of Rocky Balboa at the bottom.

Evening: End your day by visiting Reading Terminal Market, which is a historic indoor market that has been operating since 1893. Here, you can sample some of the best food in Philadelphia, including cheesesteaks, soft pretzels, and hoagies. There are also plenty of souvenir shops where you can pick up some unique gifts to take home with you.

Overall, this itinerary is perfect for families who want to experience the rich history and culture of Philadelphia in just one day.