Da Nang in 1992 seen from a bird-eye view. At that time, there was no presence of any skyscraper in the city, Kien Thuc reported. Photo courtesy of Hans-Peter Grumpe

A peaceful corner of Ong Ich Khiem - Do Quang intersection viewed from above, 1991. Photo courtesy of Hans-Peter Grumpe

Hung Vuong Street in Da Nang in 1991. Bicycle was the main vehicle of Da Nang people back then. Photo courtesy of Hans-Peter Grumpe

The wood-burning engine of a passenger car in Da Nang in 1992. This type of fuel-free car does not exist in Vietnam today. Photo courtesy of Hans-Peter Grumpe

Bicycles were piled up on the top of passenger cars in Da Nang. This scene was only spotted in the 1990s and earlier. Photo courtesy of Hans-Peter Grumpe

A bicycle repairer right on the railway Photo courtesy of Hans-Peter Grumpe

Ngu Hanh Son Mountain in 1991. The houses around were still very sparse. In 1991, the local authorities started to bar quarrying in this area. Photo courtesy of Hans-Peter Grumpe

The unspoiled beauty of My Khe beach in 1991. The beach mainly attracted the indigenous people.

Photo courtesy of Hans-Peter Grumpe

The firecracker- producing village of Nam O in 1991. Since 1995, producing firecrackers has been prohibited in Vietnam. Photo courtesy of Hans-Peter Grumpe