No problem. The Castle operation produced some of the most stunning blasts ever. Castle Bravo, Castle Yankee, Castle Romeo and some more. Castle Bravo was originally intended to be a mere 6 megaton device but the yield was
three times bigger than anyone expected. A scientific crew was trapped in a bunker for awhile and many of the island's man-made structures were damaged from the blast.
Information about the blast.
More pictures here.