U Fleků is a pub and microbrewery in Prague, Czech Republic. It occupies buildings around a central courtyard at Křemencova 11 in New Town,, not far from the National Theatre. The front facade of the building has an old, highly decorated clock above its door.

The New Town is a quarter in the city of Prague in the Czech Republic. New Town is the youngest and largest of the five independent towns that today comprise the historic center of modern Prague. New Town was founded in 1348 by Charles IV just outside the city walls to the east and south of the Old Town and encompassed an area of 7.5 km²; about three times the size of the Old Town. The population of Prague in 1378 was well over 40,000, perhaps as much as twice that, making it the 4th most populated city north of the Alps and, by area, the 3rd largest city in Europe. Although New Town can trace its current layout to its construction in the 14th century, only few churches and administrative buildings from this time survive. There are many secular and educational buildings in New Town, but also especially magnificent gothic and baroque churches. These nevertheless are not the main drawing points for tourists. New Town's most famous landmark is Wenceslas Square, which was originally built as a horsemarket and now functions as a center of commerce and tourism. In the 15th century, the Novoměstská radnice, or New Town Hall, was the site of the first of the three defenestrations of Prague.