Travelers are voting Taj Mahal, Engelsberg Ironworks and Mehmed Pasa Sokolovic Bridge as the best of 7714 key buildings in the World. Also popular are Jesuit Block and Estancias of Cordoba in Argentina, Derwent Valley Mills in England and Ir.D.F. Woudagemaal in Netherlands. Want more? Check out our map of key buildings in the World or these 609 key buildings in India.