Tianjin is a metropolis and national central city in China located along the Haihe River, which has historically been the 'mother river' of Tianjin over its 1,800 year history. Some of Tianjin's most famous sites include the Haihe River, the Five Great Avenues up-scale residential area with historically different country-style buildings, and famous foods include the traditional Ear-Hole Fried Cake made of glutinous rice dough with a red bean filling and the succulent but not greasy Goubuli Steamed Stuffed Bun created during the Qing Dynasty.