Wikipedia
Martinstein
Martinstein is an Ortsgemeinde – a municipality belonging to a Verbandsgemeinde, a kind of collective municipality – in the Bad Kreuznach district in Rhineland-Palatinate, Germany. It belongs to the Verbandsgemeinde of Bad Sobernheim, whose seat is in the like-named town. Martinstein is a state-recognized tourism resort, and with an area of 39 ha is Germany’s smallest municipality by land area.