Lörrach is also part of the tri-national project 'Mythical Places on the Upper Rhine'.
Lörrach's Ottilienkirche church in the district of Tüllingen is one of the three 'sisters' around which many legends revolve. The two hills around Basel (Bettingen and Chrischona) and the Tüllinger Berg in Lörrach are known as the three sisters.
Legend has it that three sisters, daughters of a knight of Pfeffingen Castle, settled there after the murder of their lovers by their father and used light signals to communicate with each other.