One thing I enjoy about aerial imagery is that you can see traces of how cities used to be. Tracing the spaces left behind by old train lines is a lot of fun, but recently I’ve been looking at some airports:
Old Saint-Pierre Airport (link), now with housing:
Old Jijiga Airport (link), also with housing, mostly recognizable as a piece of the street grid that doesn’t match:
Old Guangzhou Airport (link), barely visible:
Old Quito Airport (link), now a large park and very visible. I think this the airport we used when we visited Ecuador in 2012:
Old Rio Branco Airport (link) is now a road:
Old Austin Airport (link) is very hard to recognize. All the ones above were single-runway, but Mueller airport had two large runways at an angle. Single-runway ones stand out a lot more, but this is still visible as a section of the city that doesn’t really fit:
Old Lima Airport (link) closed sixty years ago and has been completely built over. But the runways survive as a pair of crossing roads:
There’s a list on Wikipedia but my favorites are ones where I’ve been looking at an aerial photo and thought “there has to have been an airport there!”
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Here’s another one, which is not on the Wikipedia list – old Kamoike Airport in Kagoshima City: https://www.google.com/maps/@31.555041,130.5563526,2162m/data=!3m1!1e3
Non-satellite photos from the past: https://duckduckgo.com/?q=鴨池空港&t=ffab&iar=images&iax=images&ia=images