Trinity Church in Kobyłka is the top class church monument. It is often called a baroque pearl of Mazovia Region. Built in 1742 in old baroque style, the church was designed by famous Italian architect Guido Antonio Longhi.
Church has been expanded in 1763 by Society of Jezus also according to project Italian Jacob Fontan. Inside the church is rich equipped in rococo style.There is interesting architectural form and decoration and rich in polychrome design. In 1999 in recess of the church facade uncovered frescos with showing the Way of the Cross. Beside the church is situated old churchyard with shrines, tombs, aged tombstone, is a repository of local historyi. To the North fromthe church kościoła is old park from XVIII age.