In 2015 they announced that they are planning to transfer responsibility over the ruins to the Canton on Nidwalden .
Most recently , in 2010 the Swiss Federal Government repaired and cleaned the ruins .
In 2015 Swiss Federal Government announced that Swiss Federal Government are planning to transfer responsibility over the ruins to the Canton on Nidwalden .
Most recently , in 2010 the Swiss Federal Government repaired and cleaned the ruins .