Photo by Bo. W |
In the southern city of Miami, Florida, there is a strange coral castle, which is a coral boulder and built the castle. It is a world-famous structure called Coral Castle. Though not really a castle, it is not entirely true coral, but it is still a remarkable achievement. More than 1,000 tons of sediment to be excavated and carved into a variety of shapes, including walls, tables, chairs, a crescent-shaped moon, fountains and a sundial.