FamilyBreakFinder created this map, featuring the slogans of every country's official tourism board. The key division, I think, is between ones that could apply to any country and ones that identify something specific to the country. [h/t Leigh]
Generic:
USA: All within your reach
Chile: All are welcome
India: Incredible India
Specific
Peru: land of the Incas
Mongolia: Go nomadic
Britain: What a knife island.