From WordNet (r) 2.0 (August 2003) [wn]:
awe-inspiring
adj : inspiring awe or admiration or wonder; "New York is an
amazing city"; "the Grand Canyon is an awe-inspiring
sight"; "the awesome complexity of the universe"; "this
sea, whose gently awful stirrings seem to speak of some
hidden soul beneath"- Melville; "Westminster Hall's
awing majesty, so vast, so high, so silent" [syn:
amazing, awesome, awful, awing]