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 height of ramparts varies according to differing terrains. On average, the wall measures 25.6 feet (7.8 meters) high, making it difficult for enemies to break through. Usually, those built in flat areas are higher than those on steep ridges, with the highest point reaching 46 feet (14 meters).