1. Pennsylvania was one of the first states to officially recognize Halloween as a holiday. In 1921, Pennsylvania Governor William Sproul signed a bill into law making October 31st a state holiday.

2. The eastern Pennsylvania town of Easton is home to one of the oldest and largest Halloween parades in the United States. The Easton Halloween Parade, which began back in 1902, draws thousands of spectators each year.

3. On October 31, 1758, the British forces under General John Forbes captured Fort Duquesne (present-day Pittsburgh) from the French, effectively ending French control in the Ohio Valley.

4. Pennsylvania is known for producing some of the most delicious Halloween treats, including Hershey's chocolate and Peeps marshmallow treats.

5. Pennsylvania is home to a number of haunted sites, including the Eastern State Penitentiary in Philadelphia, Gettysburg Battlefield, and the abandoned town of Centralia, which has been on fire for over 50 years. On Halloween night, many brave souls venture to these locations in search of a ghostly encounter.