The commune has been awarded three flowers by the National Council of Towns and Villages in Bloom in the Competition of cities and villages in Bloom.
Barr lies in the foothills of the Vosges Mountains at the foot of Mont Sainte-Odile some 25 km south-west of Strasbourg and 5 km north of Epfig. The A35 autoroute passes through the eastern tip of the commune from north to south and Exit 13 lies in the tip of the commune. The D62 runs west through the commune from the exit to Andlau. Access to Barr town is by the D362 from Mittelbergheim in the south, by the D35 from Heiligenstein in the north, and by the D42 which branches from the D1422 north of Gertwiller. The D1422 from Gertwiller in the north runs from north to south through the east of the commune and continues to Saint-Pierre. The D854 goes from the town west through the length of the commune then north to join the D426 in the west. The D426 continues through the western part of the commune to Le Hohwald. The D109 comes from Saint-Nabor in the north to join the D854 in the west of the commune. The D130 branches off the D426 in the west of the commune and goes west to join the D214 at Rothlach. There is also Barr railway station in the town with the railway going north to Gertwiller station and south to Eichhoffen station.
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