A project in the streets of Hanoi started in 2018 by Hanoi Art Space Club. In the project, manhole covers are replaced with colorful works in order to beautify the city and draw attention to the quality and preservation of the environment.
An Nam, Chào whose name and logo appear on the sign, is a restaurant in Hanoi (It is not clear whether the name was originally on the cover)
Another cover from the same project (and also has the Hanoi Art Space Club logo on it) Click for cover's details