Celebrity has some of the most beautiful and best-designed ships in the industry, true contemporary stunners. Everything — from the extraordinary spa facilities to the half-acre of grass on the line's Solstice-class ships, to the martini bars and romantic seating areas with egg-shaped chairs and daybeds — is tasteful with a modern edge. It's a design aesthetic that has influenced the rest of the industry, too, and now ships are popping up on other lines with style choices that seem ripped right from Solstice.