Lurking in the leafy surburbia of Berlin Lichterfelde is another artificial hill. It's not World War II rubble this time though, neither is it Germany's answer to Silbury Hill.
This is in fact Otto Lilienthal's 'Fliegerberg', which he had built for him in 1894, to assist in his pioneering experiments with gliders. Lilienthal's flights are significant because they were probably the first to be repeatable (as opposed to one-off flukes), thanks to Lilienthal's methodical approach.
The hill is 15m high, which might not sound like a lot until you actually get up there and ask yourself whether you'd fancy jumping off.
Sadly, on August 9th 1896, Otto Lilienthal's glider crashed during a flight from the Gollenberg near Stölln. He died the next day from his injuries, aged 48.
The Fliegerberg was turned into a monument to Lilienthal in 1932, the memorial designed by the architect Fritz Freymüller.