Ramsons (Allium ursinum - Bärlauch) or bear's garlic (which would be the translation to the German and Latin names) grows in masses in the Austrian lowlands, also in Wienerwald where these photos were taken (however they do not grow at all in the Mühlviertel highlands).
They aren't especially beautiful plants, or more precisely they aren't beautiful at all. Only when they are flowering and then withering they provide some interesting motives.
Ramsons are out very early in spring and last very long, and if there's a ramson mass growth in a forest you smell it from quite a distance. Also they are an ersatz vegetable - in former times used by the poor but lately becoming very popular (ramsons now you can order in restaurants, even in the better ones).