I believe a lot of wonders were "forgotten" early because they were in bad techs/people never build them. This includes Himeji Castle, Great Lighthouse and Red Fort. My bottom five would be, in no particular order. Great Lighthouse Angkor Wat Himeji Castle Red Fort Great Mosque of Djenne Great Mosque of Djenne is a quite horrible wonder. It requires Piety, a known bad policy tree. It does not give you anything to spread with, so you require more faith to get spreaders, when your faith output may not be that high. The extra faith from the Mosque and the wonder itself may help you get more,but usually after enhancing and spreading to maybe 4 cities (one prophet or two missionaries), I find the best strategy is to save up for GP. Angkor Wat- Honestly, why do you really need to expand your borders faster? This is one of the reasons America is bad, as well as the Krepost. They all do basically do the same thing, because the Krepost is just a building, and America dosent need to do anything to get it. Great Lighthouse is great for Archipelagos and such, but not much else.