Located at the southern-western outskirts of Bolzano/Bozen, this castle is considered one of the emblems of South Tyrol. The original name "Formigar" stems from the Latin word "formicaria". From the 10th century a.d. the castle belonged to the Prince-Bishop of Trento, while during the second half of the 15th century Duke Sigismond , Count of Tirol, bought it and transformed it into the biggest and most prestigious of his castles naming it Sigmundskron (Sigismonds' crown). At the present date it has become the Mountain Museum of Reinhold Messner MMM Firmian.