Deshengmen is a city gate that was once part of Beijing's northern city wall. It is one of Beijing's few preserved city gates and now stands as a landmark on the northern 2nd Ring Road. The original gate complex, built in 1437, was composed of three structures – the gatehouse, archery tower, and barbican. The gatehouse proper was demolished in 1921…Deshengmen is a city gate that was once part of Beijing's northern city wall. It is one of Beijing's few preserved city gates and now stands as a landmark on the northern 2nd Ring Road. The original gate complex, built in 1437, was composed of three structures – the gatehouse, archery tower, and barbican. The gatehouse proper was demolished in 1921, and the city wall was torn down in 1969. Today only the archery tower and the barbican survives. They overlook the northern city moat, and house an ancient coin exhibition inside.