Hutongs in Beijing have various styles and different lengths. The longest one is Dongjiaominxiang Hutong, with a total length of about 3 kilometers. The shortest one is Yichidajie Hutong, with only 25 meters from beginning to the end. The widest one is Lingjing Hutong, with the widest part reaching over 30 meters at present. The narrowest one is the Qianshi Hutong, and its narrowest part is merely 40 centimeters wide; people must turn sideways to pass through it. Jiuwan Hutong, with at least 13 curves, is the most tortuous one and can easily make you lose your way. The one with the longest history of more than 700 years is the Zhuanta Hutong, whose construction can be traced back to the Yuan Dynasty.