clock in the world when completed. It was also the most accurate clock of its kind and the original Victorian mechanism is still in use. Although silent at the moment, renovations will be completed in 2021 and the distinctive chimes will ring out again. 

1.      BIG BEN, LONDON Probably the world’s most famous clock, Big Ben is instantly recognisable and a symbol of Britain to the world. A UNESCO World Heritage site since 1987, it was completed in its distinctive neo-Gothic style in 1859.