Summarizing (cut-off at 5), and bringing these over to the main list at
http://www.worldheritagesite.org/allbyrank.phpAflaj
Padre Tembleque
Beemster Polder
Centennial Hall, Wroclaw - important in terms of modern architecture and sporting events.
Curonian Spit
Woudagemaal
Kinderdijk - quintessential Dutch landscape
Moscow Kremlin - represent Russian mediaeval architecture.
Madara Rider
Margravial Opera House, Bayreuth
Sokolovic Bridge
(Mt Qingcheng)/Dujiangyan
Palau de la Musica Catalana/Hospital de Sant Pau
Schokland
Shushtar - stunning, dates from the 3rd century and "It bears witness to the know-how of the Elamites and Mesopotamians as well as more recent Nabatean expertise and Roman building influence."
Su Nuraxi
Sydney Opera House - symbol of Australia, iconic architecture, world landmark
Westminster - "Mother of Parliaments"