On the right bank of the Volga, at the mouth of the Big Yungi River, lies the village of Troitsky Posad. In the first half of the 19th century, it was a provincial town, founded just two years after Kozmodemyansk, in 1585. The first church in the Posad was wooden. In the village square stood a beautiful chapel dedicated to Saint Blessed Prince Alexander Nevsky. On May 15, 1883, a five-domed stone Trinity temple was laid in place of the wooden church in honor of the coronation of Emperor Alexander III. The construction was funded by the parishioners.

The brick church, in its architectural forms, belongs to a type that reflects the influence of ancient Orthodox building traditions. The arch-shaped completion of the walls, wide pilasters cutting through the walls, windows with arch-shaped columns, all testify to the skill of an architect who knows his roots. The church is covered by a single 'box' vault, so all the drums are deaf. The faceted domes are arranged widely and freely. Round niches at the top of the arches and wide windows are later elements. From the wide refectory rises an octagonal tiered bell tower, remarkably harmoniously constructed.

By the time of its completion, the church had two altars: the main one in the name of the Holy Trinity, and a second altar in the name of the Venerable Macarius of Unzhin. In 1897, the latter began to be rebuilt in the name of Saint Nicholas the Wonderworker, which was associated with the coronation of Emperor Nicholas II.

By the beginning of the 20th century, the church was adorned with icons and necessary church utensils. There were two particularly revered icons in the church: in the name of the Holy Trinity and Saint Alexander Nevsky, painted in memory of Emperor Alexander II, the liberator.

Since 1906, the priest of the Trinity parish was Alexander Ivanovich Dalmatov, and the psalmist was Alexander Nikolaevich Preobrazhensky. Persecution of the church and its ministers did not spare Troitsky Posad.

In the 1920s, the church was still functioning, but from 1929 discussions began about its closure and transfer for cultural needs. Despite protests from residents, in 1935 the question of closing the church was raised again under the pretext of the building's emergency condition, although it was in good shape. In the second half of the 1930s, the church was closed, it began to be destroyed, church utensils were taken away, icons were removed, and bonfires were made nearby. The cemetery near the church was desecrated and destroyed. Despite the pogrom, the church survived and was turned into a grain warehouse.

In August 1989, a community of believers was registered, to whom the church building was transferred. Since 1990, services have resumed in the church.