In the history of Aventoft, the re-drawing of the German-Danish border in 1920 was a decisive event. The vernacular in Aventoft was Danish, but the result of the plebiscite showed a distinct German majority. Approximately 300 hectares of land in the parish of Aventoft nevertheless went to the Kingdom of Denmark. Rosenkranz and Aventoft, the two districts of today's Aventoft municipality, each received a border crossing. In Rosenkranz, the border ran for 130 metres in the middle of the road, separating long-standing neighbours. Aventoft, originally a fishing village, which until 1928 lay in the middle of a wide lake landscape, lost the market in Tønder for its fishermen when the border was drawn.
Today, in addition to the church, built in the 13th century and the attractive village centre with its beautiful thatched-roof houses, Aventoft's image is characterised above all by the shops of the border trade.
Today, in addition to the church, built in the 13th century and the attractive village centre with its beautiful thatched-roof houses, Aventoft's image is characterised above all by the shops of the border trade.