According to an online source, Prague belongs to the oldest…
Pilsen is a city in the western Czech Republic. It’s known for the Pilsner Urquell Brewery, specializing in bottom-fermented beer since 1842, with brewing cellars and a bottling plant. Ringed by parks, the old center has the 19th-century Great Synagogue, which also hosts concerts. The Cathedral of St. Bartholomew, completed in the 16th century, has Renaissance paintings and a tall spire with a viewing gallery (source: google)
We made it to Pilsen and stayed here for a few days. The train journey from Prague here was very picturesque and comfortable. The city is fairly small and easy to explore. We visited the breweries and samples some varieties of beer, including some unfiltered variety which was very special.
Pilsen has amazing churches and museums, and the market on the square is full of amazing things. Pilsen offers many amazing restaurants and great walks along the river are something not to be missed.