Despite Honolulu's skyscrapers and traffic jams, it's one of the most laid-back urban centers in America. Add sandy beaches, waving palms and the balmy weather of Waikiki and you've got a great mix of sun-fun and culture, best enjoyed with a multiethnic plate lunch.

It might be part of the USA, but tropical Honolulu is more laid-back than any mainland capital. With its blend of sunny charm and legislative gravitas, the downtown area is surprisingly fascinating to explore - make the effort to drag yourself away from the Gidget-and-mai-tai scene of Waikiki.