According to old maps, one of the oldest wells in Brno, the so-called Golden Well, was supposed to be located behind the Church of St. James. During the exploration in 2001 it was actually discovered in the fork of Kozí and Běhounská streets.
The first mention of a well on Jakub Square dates back to 1358. By the end of the 15th century, the well was already referred to as "Golden" and became the subject of long disputes between the town and the nearby Herburg monastery. The predecessor of Spranz's café, the Golden Well Inn, also flourished near the well at that time. The last mention of the well dates from the 1870s, when it was apparently filled in.
The well was founded at a depth of 11 m on a hexagonal oak wreath. It is made of larger stones, with brick lining in the upper part. The diameter of the well is also variable. It is almost 2 m wide at square level, but only 1.6 m wide at the bottom. As usual, several archaeological finds, mostly pottery fragments, were recorded during the extraction of the well. Stones from the lining of the upper part of the timbering were recovered in large quantities from the bottom of the well. These were again used for this purpose when the masonry was repaired. The water level was recorded at a depth of 6.5 m and a surprising feature was also noted at that time: the temperature of the water flowing in was around 38 °C. According to the workers involved in cleaning the well, this proved to be very pleasant. However, the high temperature of the water was caused by a heat leak from a nearby steam pipe.
During the reconstruction of Jakubské náměstí, the Golden Well was again incorporated into its original location. Everything was successfully solved by architectural design, based on which the well again serves as a source of drinking water. Today it is part of the space in front of a popular Brno sweet shop.