The estate near the village of Pyataya Gora began to take shape at the end of the 18th century. A small wooden manor house was located on the hillside, approached by three rays of alleys. A pond was included in the park's composition. After the first owners – the Renkievich and Fok sisters – from 1804 the owner of Pyataya Gorka was Senator Briskorn. Now, only the round Trinity Church, unique in its architectural features, an outbuilding, the park, and the gates from the old park remain of the estate. The "Pyataya Gora" estate, according to some experts, is the most ruined of them all — not a single building has survived here. But there is still something to see. Firstly, when approaching this place, the park with old lindens, elms, and larches, laid out in terraces along the hillside, catches the eye. Secondly, the church itself (or rather, what remains of it) still gives an idea of what a beauty the Trinity Church once was. It was built by the widow of the last known owner of the estate — the Russian diplomat Fyodor Maksimovich Briskorn — in the 1830s (the project’s author is unknown). The oval-shaped building is surrounded by columns all around, with an ancient portico on one side. It is said that the church was still active in the 1960s until, by order of the local authorities, the cross was removed from it by a tractor. After that, the building was abandoned and quickly fell into disrepair. Upon close inspection, it is visible that the foundation has settled, some arches are crumbling, others are gone entirely, and the ceilings are on the verge of collapsing. The village of Pyataya Gora itself was first mentioned on a map of the Saint Petersburg province drawn up by Schmitt in 1770. In this document, it was called "Myza Pyatogorskaya." In 1834, the province map was made by Schubert, who named the village "Pyataya Gora Briskorn." In 1885, the village had 8 households. According to the census, one and a half centuries later — in 2010 — 20 people lived there. The place was repeatedly referenced in poems by Igor Severyanin. They were included in the 1932 collection "Solovey." For example, in the poem "Elizavetino Kikeryno," he writes: "Behind Pyatigorye — Lakes. / What maidenly blushes! / Jasmine evenings!" It is well known that the poet loved to fish in the local lakes. Locals say that spirits visit the estate, so it is always slightly misty here; a light veil in the air creates a feeling of quiet mystery. Near Pyataya Gora is Lake Dontso with the cleanest water. There are about two hundred burial mounds in the surrounding area.

Source:

https://kudago.com/spb/place/usadba-pyataya-gora/

https://www.lentravel.ru/districts/volosovskij/dostoprimechatelnosti/usadebno-parkovyy-kompleks-pyataya-gora.html