Big Ben is actually a clock tower of the Westminster Palace. In 2012, the construction was officially renamed Elizabeth Tower. Unfortunately, as of February 2021, the tower is still under reconstruction and no excursions can be held there. On the other side of the planet, in the Canadian capital, Ottawa, you can find something called the Peace Tower that is as spectacular as its British doppelganger. It serves as a part of the parliament building. The Canadian $20-dollar-bill depicts this very tower.