Agree with qstor: FRQ1 Haunted Halls of Eveningstar is a superb module that combines the compact reusability of the 1E classics with the more setting-heavy style.
I think most of the really good adventures are world-specific, otherwise it's hard to develop consistency and a solid sense of place. The really great 1E modules are firmly tied to the World of Greyhawk (excepting I3-5 and Dragonlance, which is another case) -- and some of the apparently settingless 2E modules weren't really (I'm thinking Night Below).
I think most of the really good adventures are world-specific, otherwise it's hard to develop consistency and a solid sense of place. The really great 1E modules are firmly tied to the World of Greyhawk (excepting I3-5 and Dragonlance, which is another case) -- and some of the apparently settingless 2E modules weren't really (I'm thinking Night Below).