Hidden Gems:

1. Raccoon Creek State Park, Hookstown: With 44 miles of trails, it's a paradise for hikers and wildlife enthusiasts. Time your visit to see the explosion of 700 plant species in the Wildflower Reserve.
2. Sahli Nature Park, Chippewa Township: Known as an enchanted forest, it's perfect for peaceful hikes and wildlife viewing.
3. North Country Trail, Darlington: 20 miles of pristine hiking through wooded landscapes, offering a serene escape into nature.
4. Old Economy Village, Ambridge: Explore restored structures and beautiful gardens from the early 19th century and learn about the Harmony Society.
5. Underground Railroad sites in New Brighton: Including the Sara J. Lippincott House and the First Presbyterian Church, significant for their historical roles.
6. Air Heritage Museum & Aircraft Restoration Facility, Beaver Falls: Discover the history of flight and see restored vintage aircraft and World War II artifacts.
7. 1802 Log House, Beaver: Situated on the grounds of the Beaver Area Heritage Museum, this log house offers a glimpse into the past.

Must-Do Activities:

1. Boating and Fishing at Raccoon Creek State Park: Enjoy a day on the 100-acre lake with options for boating, fishing, and camping.
2. Hiking and Biking at Bradys Run Park: Tackle eight majestic trails through thick forests and enjoy arresting views.
3. Exploring the North Country Trail: Trek along this extensive trail that spans from North Dakota to New York, with a significant portion running through Pennsylvania.
4. Walking Tour of Underground Railroad Stops: Learn about Beaver County's crucial role in the Underground Railroad with a self-guided tour in New Brighton.
5. Theater Night at Lincoln Park Performing Arts Center, Midland: Catch everything from Broadway hits to holiday classics on stage.
6. Gaming at Pinball PA, Aliquippa: Play to your heart's content with access to one of the largest collections of video games and pinball machines in the country.
7. Racing at Pittsburgh International Race Complex, Wampum: Feel the thrill as you take the wheel of a go-kart or watch professional races.
8. Polo Match at Darlington Polo Club: Experience the unique atmosphere of a hometown tailgate and polo match under the lights.

Instagrammable Spots:

1. Wildflower Reserve at Raccoon Creek State Park: Capture the stunning floral diversity and scenic trails.
2. Bradys Run Park: Snap photos of the picturesque views and serene lake.
3. Sahli Nature Park's Tranquil Pond: Reflect and photograph the peaceful surroundings.
4. Scenic Spots along the North Country Trail: Document your journey through the beautiful Pennsylvania landscape.
5. Historic Architecture at Old Economy Village: Get creative with photos of the early 19th-century buildings and gardens.
6. Vintage Aircraft at Air Heritage Museum: A unique backdrop for any aviation enthusiast.
7. 1802 Log House and Beaver Area Heritage Museum: Capture the essence of Pennsylvania's historical architecture.

Remember, the best travel experiences often come from exploring off the beaten path. Each of these locations offers unique insights into Pennsylvania's natural beauty, history, and culture, making them perfect for an adventurous and fulfilling visit.