If you want to witness a natural display of a sense of wonder, just observe a child. A child's whole world is viewed through the eyes of wonder and excitement. A child has no judgements of why things are so, but rather a child is in awe of life and views life through innocence, purity and curiosity.
You may have often heard the term "be childlike," referring to our adult self to let go of the adult ego and be more open and curious. The truth is that we lose our sense of wonder as we become adults.