Two photos, one natural and one man-made.
The first is a boulder at Moeraki. These natural concretions erode out of the cliffs onto the beach and gradually wash away, but there are always more to replace them. They are much visited by tourists.
The second photo is a sculpture that is suspended in the air above Wellington's Civic Square. It was taken at my daughter's graduation ceremony. All the graduates had paraded through the city and released balloons in the air. In the background you can just see two of the last of the balloons flying away.
For more round photos, visit Thematic Photographic here