WATCH: Florida fisherman catches 552-pound grouper on kayak. 1  Florida fisherman Jon Black caught a 552-pound grouper while fishing in Sanibel Fla. on May 20. 2  He believes this is a record catch for someone on a kayak.
The Greek historian Herodotus claimed that Babylon surpasses in wonder any city in the known world and specifically praised the walls which he said were 56 miles (90 kilometres) long, 80 feet (24 metres) thick, and 320 feet (97 metres) high.
The Great Wall of China is much longer than what has been commonly accepted as fact. The length of the wall was previously thought to be 8850 kilometers or 5500 miles. The actual length, however, is 21,196.18 kilometers.