Embrace an early start and make the trek from the Gubeikou section of the Great Wall to the Jinshanling section. Hike over steep, remote terrain for around 5–6 hours, taking in incredible views along this comparatively quiet trail. Some parts of the wall are unrestored, so you'll need to concentrate hard to keep your footing, while other stretches will take you off the wall to walk alongside it through the countryside. The trek will be challenging, but the sight of the wall snaking through the hills as far as the eye can see and the feeling of being immersed in ancient history will be ample reward for your efforts. After the hike, return to the guesthouse, put your feet up, have a few beers or maybe learn how to play mahjong with the locals.