。
What a magnificent view!
Literal
Grand view [copula-ですね].
Short and exclamatory despite being grammatically a statement. 壮大な ('grand / magnificent') is a な-adjective with a formal, literary ring — 壮 (grand) + 大 (big). 眺め (ながめ, 'view / vista') is the noun form of 眺める ('to gaze at'). The sentence-final ね invites agreement — 'isn't it?' — making it a shared appreciation rather than a solo declaration. A typical sightseeing exclamation.