Believe it or not, before the Sydney Opera House became one of the most recognizable structures of the 20th century, it was a dream of architect Jørn Utzon. Who many believed was inspired by sailing yachts, Utzon was actually inspired to design the opera house by peeling an orange and being left with the segments, all in similar shapes. Utzon's genius design allows for all the roof sails to create a perfect sphere, just like an orange!