Kowloon Walled City in 1990. Photo: SCMP

The Lung Tsun Stone Bridge, used as a landing pier. Photo: SCMP

Shops inside the Walled City in 1972. Photo: SCMP

The start of demolition in 1993. Photo: SCMP

Kowloon Walled City in the 1970s with the squatter village in front. Photo: SCMP

Guards with protesters during evictions in 1992. Photo: SCMP