Gapyeong Rail Park is an easily-accessible escape from Seoul's hustle and bustle. Here, you'll enjoy views of the idyllic countryside, including the stunning Han River. Film buffs will recognize this park as one of the shooting locations for the 1997 Korean film "The Letter." The best way to explore this park is by riding its popular rail bikes. These are vehicles that run through rails that take you to incredible spots around the park. They come in two-seater and four-seater options so you don't have to sightsee alone. Come with your significant other, your friends, or your family for the perfect getaway.