Trinity Park is a keeper of the historical memory of our ancestors. Almost two hundred years ago, the main temple of the city, the Cathedral of the Holy Trinity, stood here. It was a brick building in the style of late classicism, with a rectangular shape, a single dome, side pilaster porticos, and a three-tiered bell tower with a spire.

The foundation of the cathedral was laid on June 19, 1838, in the very center of the city. The project was personally approved by Emperor Nicholas Pavlovich. The construction took a long time, as it progressed with the arrival of donations. The cathedral was warm thanks to the Amosov stove, named after its creator, Russian military engineer Nikolai Alexeyevich Amosov. Almost all the interior walls were adorned with paintings. The dome was decorated with an image of the Holy Trinity, and the top of the altar and refectory was azure.

The facade of the temple was executed in the Byzantine style. An altar dedicated to Archangel Michael was added, decorated with an arch, consecrated on December 2, 1842, while the main altar was consecrated on June 29, 1847. The cathedral was surrounded by a lace metal fence with stone supports, and small towers covered with tin were located at the corners. In 1867, a bell weighing 516 poods was raised to the bell tower.

In 1868, Grand Duke Vladimir Alexandrovich visited the cathedral, accompanied by the patron general, adjutant Count Boris Alexandrovich Petrovsky, and Grigory Sergeevich Aksakov, who was then heading the province.

The Trinity Cathedral was wealthy. In April 1919, the district commission for the separation of church and state confiscated valuable items and utensils from it. In the second half of 1931, the cathedral was closed and began to be dismantled. In 1940, a square was laid out in its place. In 2005, a cross and a memorial stone were installed at the site of the former cathedral. Now, in Trinity Park of Buzuluk, a chapel of the Life-Giving Trinity has been built in memory of the Cathedral of the Holy Trinity.