I really like spots where I have an overview over a city. On my last trip I went to Berlin and at the Television Tower I had a very nice view above the city, this always shows me how big cities like Berlin and Vienna are. Looking over a city from above and barely seeing the city limts at the horizon. Knowing that there are a lot more bigger cities with several million inhabitants like Tokio, Jakarta Dhaka. I am always wondering why big cities don't fall into chaos since so many services have to work flawless all the time. And in 3rd world countries it must be even more difficult to maintain and keep all the necessairy services running.
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From @florian-glechner