They're just beatiful, aren't they? - Acer negundo.
Oh, and a by-the-way: yesterday in Burgenland and today in many places temperatures rose above 25 degrees Celsius. Meteorologists here call days with temperatures above 25° 'summer days'. Thus, technically, we have right now the first 'summer days' of the year. Which of course does not mean that sommer had arrived; spring rather, really.