U Fleků is a beer hall that has been brewing on its own plot since 1499, and it is unapologetically a show. Waiters move between long communal benches replacing half-litres before they are empty and marking the tab, accordion music runs in one hall, and roast pork and dumplings come out of the kitchen all evening. The beer is Flekovský tmavý ležák, a dark thirteen-degree lager close to black in the glass, and for 177 years it was the only one made here.
A pale beer joined it in 2020. The building spread as it went: vaulted halls, painted rooms, a courtyard and a beer garden under chestnut trees seating several hundred. The wrought-iron clock sign hanging over the street is how you find the door. Locals will tell you it is a tourist trap and they are half right. It is also a preserved beer hall doing exactly what beer halls did, and no other brewhouse in Prague has run without a break for this long.