The Sargin Ravine is home to one of the city’s purest spring water sources, known as “Kharkiv No. 1” (Kharkiv-1). The daily volume of water flowing from the spring is approximately 350,000 liters. During the Soviet era, there was a bottling plant that processed water from this spring.

In 1960, an elegant concrete pavilion supported by three pillars was built over the spring. The design was created by architect Vadim Vasilyev.

This unusual pavilion (some people saw its shape as resembling a hat) has become a symbol of Sargin Yar and one of the earliest surviving examples of 1950s–60s Soviet modernist architecture in Kharkiv. The pavilion’s original concrete structure, which covers nine water intake points, was decorated with glass and ceramics.

During the renovation of Sargin Ravine, which took place in the late 2010s, the pavilion was covered with a dark-colored material featuring lights that mimic stars at night.