Pennsylvania is located in the northeastern United States, between New York, New Jersey, Maryland, and Ohio. It has a variety of climates from hot and humid in the southeast to cooler in the central and northeast regions. Some of Pennsylvania's most notable landmarks include Independence Hall in Philadelphia, Hershey's Chocolate World, and Kennywood Park. The state exports agricultural products like cattle, hogs, and various crops. People in Pennsylvania have adapted to the climate and modified the landscape over time.