These are the symbols someone is using for architectural infographics. I think it is interesting to see if the buildings can be inferred by just looking at the photos and not paying attention to the names. That is a measure of how effective the visuals are in terms of conveying meaning/ function. Furthermore, it can also be noted what elements of the design cause us to guess those buildings – shapes, colours, movement, etc.

Source: https://www.edrawsoft.com/infographics/architecture-infographics.php