Ohiopyle State Park is a must-see. There is an easy-access observation area located right next to the parking lot and visitors' center. If you're feeling more adventurous, there's over 79 miles of hiking trails (and multiple waterfalls!) to check out. Sarah took these pictures :)
Fallingwater is a world-famous house designed by Frank Lloyd Wright in 1935. The property is also designated a UNESCO World Heritage Site. It's right across the street from the venue. If you plan to visit, tickets must be purchased in advance.