cynosure
That which serves to guide or direct; a guiding star.
figuratively
let faith be your cynosure to walk by
Something that is the center of attention; an object that serves as a focal point of attraction and admiration.
figuratively
Bosom'd high in tufted trees, Where perhaps some beauty lies, The cynosure of neighbouring eyes.
Towers, and battlements it sees
Where it comes from
From Middle French Cynosure (“Ursa Minor; Polaris”), from Latin Cynosūra (“Ursa Minor”), from Ancient Greek Κυνόσουρα (Kunósoura, “Ursa Minor”, literally “dog’s tail”), from κυνός (kunós, “dog's”) + οὐρά (ourá, “tail”).
Adapted from the Wiktionary entry cynosure (CC BY-SA 4.0).