Colle Santa Lucia borders the following municipalities: Alleghe, Cortina d'Ampezzo, Livinallongo del Col di Lana, Rocca Pietore, San Vito di Cadore, Selva di Cadore.
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In turn, the Austrian parts of the Brixen diocese around Feldkirch, Vorarlberg were at first allocated to the Diocese of Innsbruck and elevated to the Diocese of Feldkirch in 1968; the Ladin districts of Fodom (Livinallongo del Col di Lana and Colle Santa Lucia) and Anpez (Cortina d’Ampezzo) passed from Brixen to the Diocese of Belluno.
Selva di Cadore borders the following municipalities: Alleghe, Borca di Cadore, Colle Santa Lucia, San Vito di Cadore, Zoldo Alto.