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 Acropolis of Athens, a hill c.260 ft (80 m) high, with a flat oval top c.500 ft (150 m) wide and 1,150 ft (350 m) long, was a ceremonial site beginning in the Neolithic period and was walled before the 6th cent. B.C. by the Pelasgians.