[1] It was the site of the murder of Pompeius Planta in 1621 by Jörg Jenatsch during the conflicts between Catholics and Protestants known as the Bündner Wirren.

It was mortgaged again in 1409 to Conradin Rambach and the cathedral chapter, again in 1426 to Bartolomäus Planta and in 1447 to Hans Wellenberg.

During the Bündner Wirren, the castle was home to Pompeius Planta who was a prominent member of the Catholic, pro-Habsburg faction in the Three Leagues.

In 1618, the young radical Jörg Jenatsch became a member of the court of 'clerical overseers' and a leader of the anti-Habsburg faction.

With the support of the anti-Habsburg court, armed mobs attacked and arrested several pro-Habsburg leaders including the archpriest Nicholas Rusca and the provost Johann Baptista who was known as Zambra.

However, on 24 February 1621, a force of anti-Habsburg troops led by Jörg Jenatsch assembled to attack the castle in retaliation for the killings in Valtellina.

Early in the morning on 25 February, the troops attacked the castle and killed Pompeius Planta as he attempted to flee.

[8] Years later, Jenatsch converted to Catholicism and on 24 January 1639, he was killed during Carnival in Chur by an unknown attacker who was dressed as a bear.

After his death, the ownership remained divided until 1664 when the Salis family sold their share to Christoph von Rosenroll for 9000 gulden.

In 1798 Johann von Buol-Schauenstein sold the castle to his brother, the Bishop of Chur Karl Rudolf.

[2] The knight-hall apartment was renovated in 2018 and is now a guest accommodation www.ferienresidenz-von-planta.com The rectangular tower from the 13th century has walls that are up to 2.5 m (8.2 ft) thick.