We We often define the big steps for mankind in terms of monumental buildings, constructions, discoveries. But if you ask me the real magic on our little planet is all the more subtle inventions and individuals. People that with e.g. a simple pop song can make the whole world smile for decades.
I even set up small party to celebrate the 8. Wonder of the world – my brother made a lot of paintings of all the iconic musicians that made the big steps for music and mankind.