For visual flight rules (VFR) flights, the minimum clearance height above ground level depends on various factors, including population density, the height of obstacles, and proximity to an airport.
As a general rule, built-up areas may only be flown over at an altitude of 300 metres or more and within a radius of 600 metres from the highest obstacle.
However, depending on the size of the built-up area, higher minimum flight altitudes may be required.
Furthermore, numerous additional restrictions are set out in official aeronautical publications, which pilots must be aware of and comply with when planning flights. This is particularly true for night flights where visibility is reduced.