Römerstein is a municipality in Baden-Württemberg, Germany; three formerly independent villages (Böhringen, Donnstetten, Zainingen) and two hamlets (Strohweiler and Aglishardt) were merged in 1975.

The community is named after the Römerstein, the highest hill of the region at 875 m. The municipality is located about 22 kilometers east of Reutlingen on the plateau of the Swabian Alb at an altitude of 803 m above sea level.

The identification of the Roman town Clarenna which is passed down through the Peutingertafel is, with the archaeological finds in Donnstetten very likely, but not absolutely certain.

Main article: Castle Donnstetten The municipality Römerstein originated during the Baden-Württemberg district reform on 1 January 1975 as a merger of the formerly independent municipalities Böhringen (with thatched hamlets and Aglishardt) Donnstetten and Zainingen.

The members of the United Methodist Church gather in Laichingen, while the Catholics of the parish of St. Joseph are assigned in Bad Urach.

Blazon : "About a double row of black and silver geschachten sign foot in Blue a flying upwards golden hawk."

Römerstein is conveniently located on the main roads 28 and 465 ( Kirchheim unter Teck - Leutkirch im Allgäu ), which pass through the municipality.

The community is located in the comb 222nd Winter sports in Römerstein is possible: Three ski lifts and six inter-related cross-country trails totaling over 50 kilometers in length make Römerstein a popular winter sports resort in the Swabian Alb.

Römerstein has a bobsled, and Zainingen one reaches the Swabian Alb Biosphere Reserve in the former military training area Münsingen .

From the covered observation deck of the Roman stone tower a view in all four directions over medium Alb is possible.