A small triangular square near the Old Town. Its center is adorned with a medieval well, built in 1560 and protected by a hand-forged lattice, which was probably created by the court locksmith J. Schmidhammer. The multi-colored hand-forged lattice is probably the oldest in all of Prague and is an example of the highest craftsmanship. It is decorated with ornaments and figures of angels on the edges, the top with poppies was completed in the 17th century by a Czech lion. The well and its equipment are still in operation today.→