Anti-Semitic graffiti has been sprayed on the walls of Carlisle Castle.
Cumbria police is investigating the incident as racially aggravated criminal damage.
The graffiti was found on June 2 and officers are appealing for anyone with information or who witnessed the incident to please get in touch.
A police spokesman said: “Hate related incidents can have a serious impact on communities and individuals. There is no place for hate on the streets of Cumbria and these types of incidents are dealt with vigorously and appropriately.”
If you have any information is encouraged to contact PC 2999 on 101, or report online at www.cumbria.police.uk/reportit, quoting incident number 191 of 2 June.
Alternatively, call Crimestoppers anonymously on 0800 555 111.