Enjoy a slower pace of sightseeing — and maybe even get a little spiritual — at Zhengjue Temple. If you're able to go inside, why not hang around for a moment of quiet self-reflection?
When you've spent a bit of time at this place of worship in Haidian, why not make your way to Tsinghua University, Summer Palace, and Beijing National Stadium? They're near Zhengjue Temple and also a hit with tourists.