Philadelphia is a city located in the state of Pennsylvania in the United States. It is the sixth-most populous city in the country, with a population of over 1.5 million people. Philadelphia is known for its rich history, being one of the oldest cities in the United States and serving as the birthplace of America's independence. The city played a significant role in the American Revolution and the creation of the United States Constitution. It is home to iconic landmarks such as the Liberty Bell and Independence Hall, where the Declaration of Independence was signed. Philadelphia is also known for its vibrant arts and culture scene, with numerous art museums, theaters, and music venues. Additionally, the city is famous for its food, especially the iconic Philly cheesesteak. Philadelphia is a major economic center, with industries ranging from healthcare and education to finance and technology. Overall, it is a diverse and vibrant city with a rich history and cultural offerings.