With an 10 hour layover, We were able to see the Great Wall at Mutianyu and also briefly visited the Forbidden City. Though 10 hours is not long enough, especially with the drive time, it was the perfect tease to make me want to come back and experience everything in full. William was my guide for the day and I couldn't have asked for better company. He is incredibly knowledgable and very funny! (Make sure you ask him to do his Indian accent. He actually had a video go viral because of it, and a girl asked him to stop and take a photo with her!) He went above and beyond to make sure that my time there was as stress-free as possible. He picked me up right outside the security check point and dropped me off 2 hours before my flight which was the perfect amount of time, even with some long lines to get through security again.
Overall we would definitely recommend this layover tour to anyone who wants a taste test of Beijing! Not only did I learn a lot about both Chinese history and current culture, but we feel that I've made a friend as well! Don't miss out, definitely give it a go!