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Dimensions: How long, high, and wide. Simatai Great Wall is 5.4 km (3.4 miles) long, with altogether 39 watchtowers. At the east of Simatai, the elevation goes abruptly up from 295 meters (968 ft) to 986 meters (3,235 ft), making a breathtaking scene. The wall is very steep and perilous, with the narrowest part only 40 cm wide.
Big Ben, or to put it correctly: 'The Elizabeth Tower', has four clock faces, and on each of those faces there are two hands. This is a grand total of eight. 'Big Be â¦ n' is actually the name of the bell housed inside the tower.