Historical outline
The origins of the name of the locality in which the historic building in question operates may throw the searcher into a slight confusion. The reason for this is not only historical, but also structural variability. Initially, the neighbouring Strzelczyska and Zakoościele belonged to the Mościsko starosty during the First Republic. At the turn of the nineteenth and twentieth centuries, they were owned by the Stadnicki family from Krysowice. In Strzelczyska itself, there has long been an independent parish and an associated historic church building. Interestingly, sources as early as the 19th century define it as belonging to Zakosciel. As can be seen, the boundaries have changed quite fluidly over the years and are therefore difficult to grasp unequivocally today. What we do know for sure, however, is that in Strzelczyska itself, there is now a brand new church building, while the historic temple in Zakosciel (which, over time, became a suburb of Mościskie) is now home to a branch of the Mościskie parish.

The parish church in Strzelczyska (today Mosciska-Zakościele) appears in source texts as early as 1397. Its first incarnation was wooden and shingled. Most probably, in 1648 or 1649, the building was burnt down by Cossacks. Unfortunately, the inside of the church was then occupied by local people who (significantly for those times) sought refuge in the temple. The fate of the next, again wooden, building is not entirely clear. It is known from the inspection report of 1744 that the rebuilt church was a single-nave building with a separate chancel. A tower was built at the front, the base of which was the porch. As quoted by Marek Walczak:

"There were no liturgical vessels in the church, and the only chasuble kept there was sewn from black cloth. This was probably related to the special functions of the church, where services were held almost exclusively for the dead, who were buried in the adjacent cemetery".

The brick building referred to in this study was not built until the early 20th century. It is worth noting, however, that much of the old furnishings were incorporated into the new church. Over the years, the interior of the new church was enriched and nuanced. Unfortunately, the building was damaged during the First World War. In 1923, the sisters of the Josephite congregation in Lviv received the church and its garden in order to establish a new religious house with a nursery. The building was closed in 1948 and was returned to the congregation in 1989.

Architecture
The church sits on an island surrounded by a pond. It is likely that the "water part" was formerly a kind of defensive moat. The overall shape of the building is quite simple: one nave, four bays plus a single-bay chancel closed with a trilateral. However, the building is oriented, i.e. it faces towards the symbolic east, presumably Jerusalem. Marek Walczak, in his study of the temple, emphasises that the design is not very sophisticated and has a rather provincial character.

Generally speaking, the church is indeed an object like many in our space and does not stand out in any particular way, apart from the irrefutable fact that it certainly bears witness to its time and the possibilities available at the time. Most ornate, as is usually the case, is the façade. Formally simple, as it is single-axis and single-storey, it is nevertheless enriched by a triangular gable separated by a profiled cornice. On the axis, there is a portal house enclosed in a triangular form. The entrance opening has a pointed-arch design. The higher part features a pointed arcade analogous to the shape of the cottage from which it rises. Of the most important features, attention should also be drawn to the ogival arcade on the gable.

The other facades are much simpler. They are closed with a profiled cornice. The windows are rectangular with pointed arches. A gable roof, covered with sheet metal, was used over almost the entire building. The apse is covered with a multi-sloped roof. The turret is covered with sheet metal and topped with a cross. Iron crosses were placed on both sides of the ridge.

Inside, the most striking feature is the articulation of the walls with Doric pilasters. The rainbow arcade is sharp-arched. The entire interior is covered with a barrel vault with lunettes. The masonry choir is accessible through a wooden staircase in the south-west corner of the nave.

Highlights of the church furnishings and surroundings include:

• Neo-Baroque high altar from 1902;
• Neo-Gothic altar of the Sacred Heart of Jesus by Józef Nowakowski and Wojciech Żulcz, dated 1907;
• Altar of the Immaculate Heart of the Virgin Mary, similar in style to the above, located at the rainbow arch to the south;
• Pulpit dated 1902;
• The painting "Saint Anne of Solitude" from the early 16th century (tempera on board);
• Single-storey bell tower.