I too have always liked Tempelhof, last time in was on Conti Flug in a 146 from London City in the 1990s (shame this route disappeared). On short finals you come down between the apartment blocks that seem closer to the runway than most hangars at airfields !
And that terminal is a real model of 1930s architecture, both inside and out. And the U-Bahn station is just on a nearby street corner next to a greengrocers, yet far more convenient for the terminal than the Underground at Heathrow.
SSK, interesting you compare it to London Euston train station, this was going to be rebuilt in 1939 (whole project cancelled by the war) and the plans of the frontage look remarkably similar to Tempelhof, with the emphasised verticals and big central tower. It was just the architectural fashion of the time. Euston was finally rebuilt in the 1960s to a new and very unappealing contemporary design.