an Entity references as follows:
The Geriatriezentrum Am Wienerwald Feldbahn (Geriatric nursing center Wienerwald) was a 500 mm (19+3⁄4 in) minimum gauge railway constructed in 1904 at the premises of the former nursing home Lainz in the 13th District of Vienna, Hietzing. Until its closure in 2011 it was the oldest feldbahn in use in Austria.