Sveti Tomaž developed at the place of the former neolithic settlement. In the centre of the village there is the parish church Sveti Tomaž (St. Thomas), which was built from 1715 to 1727 with the help of feudal donators: Countess Elisabeth Saurau-Peth, baron Muhr and the commander Gvido Starhemberg. It was dedicated in the year 1742. It is about a big, stylish advanced architecture which was one of the first with a unified, centrally projected building with a ground plan in the shape of a one lined cross and a half dome that accents the central place. To this centre there is on the west side an additionally constructed bell tower, on the southeast there is a sacristy with an oratorio floor from the year 1874. Its imposing appearance (mortar frames, window bordering and low pilasters) and the unique space of the internal part are divided by baroque style. The inside is covered with fresco by Jakob Broll from the year 1894, which were renovated 30 years later by Franc Horvat. Unfortunately, the original baroque furniture did not survive; the current is from the beginning of the 20th century and shaped in the Neorenaissance style. There are five altars, a pulpit, a confessional, benches, stations of the Cross and organs. At Sv. Tomaž there was serving the priest, poet and interpreter Matija Zemljič (1873-1934). He is most famous for his poem Oj, Triglav moj dom (oh Triglav my home).
At church there still today people keep company, especially on 3rd July, that is the day of the parish patron and the municipal festival Sveti Tomaž.