The architecture is grand, neoclassical, and ornate, typical of Central European cities. I see a sign for "Mucha" and "The Slav Epic," which strongly points to Prague. The van has a ".cz" web address, confirming the Czech Republic. The cobblestone square and the specific style of the building suggest a prominent location in the city center. I am very confident this is near the Municipal House in Prague.

then: guess