Allen is a city in the Upper Valley Negro River. It currently has 25,000 inhabitants.

Founded on May 25, 1910 by Patricio Piñeiro Sorondo, its name is in tribute to the English engineer Charles Allen, member of the board of the company Ferrocarril Sud and owner of land in the area. His efforts culminated with the construction of the railway station. He also created the Bodega Barón de Río Negro, of wines and champagnes, the building is in ruins on Route Nac.22, currently the brand was recovered by Cooperativa Frutivinicola de Allen.

In this town, the important Rio Negro Fruit Concentrating Market operates.

AllenLike all the villages in the area, you can visit establishments related to the main economic activity, fruit growing.

Allen is where the National Pear Festival is held annually.