The origin of the big ben is when a building burned called the palace of westminster burned Down In 1834 And The Big Ben Was Created for A New Place For People To Meet.
The Palace of Westminster was a meeting place for lords and saints but burned down in 1834 and then they wanted to build tower and a clock for them to meet.
The Chunnel is a long railway under the english channel that connects London to Paris. It Cost $55 And The Amount Of Time To Get Across Is 2.5 Hours
Some history of the chunnel is that it took $15 billion dollars to make.