Toursits walking through the Parc des Bastions in Geneva (Switzerland) discovered on July 15 that the Reformation Wall had been vandalised.

The monument is one of the main touristic attractions of the city in which Jean Calvin, one of the key French Protestant Reformers, developed his work after 1536.

The wall, inaugurated in 1909, also honours the influence of Guillaume Farel, Théodore de Bèze and John Knox.

The paint was thrown on the monument forming a rainbow, a symbol of the LGBT groups.

In the first reaction, the police said no-one had claimed the attack.

According to local website LemanBleu, the city council of Geneva will file a criminal complaint. Staff working in the park said the monument would be cleaned as soon as possible.

There have been a number of vandalic acts against the Protestant monument in the past. According to newspaper Le Matin, in March, feminist activists wrote a graffiti on the wall reading, “Where are the women?”