Workers at the construction site at Lake Balaton on the peninsula of Tihany, Hungary - a UNESCO world heritage site - on May 18, 2021. Lake Balaton is the largest lake in Central Europe and one of Hungary's most cherished natural treasures. But some worry that the lake's fragile ecosystem and the idyllic atmosphere of the quaint villages dotted along its banks are in danger because of speculative developments. (AP Photo/Laszlo Balogh)