The Loumen Gate, in the northeast part of Suzhou, was formerly known as Miaomen Gate. According to the Record of Wu (Wu, originated from Wu State in late Spring and Automn Period, 770-476 BC), “The Loumen Gate was officially called the Miaomen Gate, during the Qin Dynasty, when there was a Miao county in southeast China. Its name was changed to Lou county during the Han Dynasty when Wang Mang seized the throne.” After that, the gate was referred to as the Loumen Gate.

In the early part of the Qing Dynasty, the gate was rebuilt with an inscription “Fascinating scenes of rivers and seas”. The gate consists of an outer, central, and inner section. There used to be a gate tower on the inner section and sluice gates between the three sections, along with locked gates. The towers of the three sections were dismantled in 1948, and the inner gate and water gates were removed in 1958.