Lemnia Commune is situated in the neighborhood of the communes Bretcu, Poian, of the village Lunga, belonging to the municipality Târgu Secuiesc.
It is 74 km from Braşov, 12 km from Târgu Secuiesc and 49 km from Sfântu Gheorghe, the administrative center of Covasna county.
The main access points are the railway Sfântu Gheorghe-Bretcu and the national road Braşov-Bacău (DN 11).
- The Saint Michael Roman-Catholic Church
- Mountain routes