Adjectives

(s)baronial, imposing, noble, statelyimpressive in size, manner, or appearance“a baronial mansion”, “an imposing residence”, “a noble tree”, “severe-looking policemen sat astride noble horses”, “stately columns”
(s)distinguished, grand, imposing, magisterialused of a person's appearance or behavior; befitting an eminent person“his distinguished bearing”, “the monarch's imposing presence”, “she reigned in magisterial beauty”