If you happen to be in Seoul during its autumn season, do yourself a favor and go on a trip to the incredible Naejangsan National Park and marvel at the beauty of autumn foliages. The national park is hailed by the locals as the best mountain area in the country for getting breathtaking views of the lush autumn leaves that blanket the landscape. Once you arrive there, you'll begin by having a hearty feast on a scrumptious Korean beef hot pot for lunch. After a satisfying meal, you'll traverse the wild and tranquil forests of the National Park, uncover many of its hidden gems, and appreciate the sublime resplendence of red leaves. You'll even get to pass through the famous Red Leaves Tunnel and visit the Naejangsan Temple where you can offer prayers for good luck. If you need to take a break from the pressures of the South Korean urban space, you'll definitely be able to clear your mind and relax as you walk around the national park. It's a must, especially if you're a nature lover.