hong kong flat Posted By Roberta Murphy Thompson+ on April 21, 2018 photo of Hong Kong flat that sold for $57 million. Related Posts:Hong Kong Luxury Real Estate on a RollEffective Waterproofing Solutions for Flat RoofsMost Expensive Cities in the WorldSotheby's Realty Debuts in San DiegoWant to Live in a Most Expensive City?Who Reads About Luxury?