you are forgiven if you think these are our HDB flats in a newly developed new town like Sengkang or Punggol...
but these are actually in Angola, an African country
apparently these are built in a joint venture by the Angola government and a China construction company, but in the end they are left empty because they are still too expensive for the Angolan people
(saw these interesting photos in Fb: https://www.facebook.com/Africbook/posts/538827179567865)