In the middle of the fields, 7km east of the airport (about 22km from Hohhot), is Bái Tǎ, a striking seven-storey octagonal tower built during the Liao dynasty. A steep, double-barrelled staircase leads to a small shrine room at the top. Few travellers come here, so you will feel like you have the place to yourself.
A taxi from Hohhot will cost around ¥70 return.