Qianshi (Money Market) Hutong
Qianshi Hutong, in Dashilar, also known as the money market hutong, sits near Qianmen in Dongcheng. It's justifiably famous for being Beijing's narrowest hutong. At its narrowest section, this one is only 40 centimeters wide. It's approximately 55 meters long, but don't forget your camera. There's a lot of old-school Beijing flavor here, in everything from the intended decorative flourishes to the most basic stones, walls, steps. Put it on your list.