1. The Big Ben is an old name of a clock tower. The Big Ben is the biggest bell in the tower
2. The clock tower Big Ben is a symbol of GB and London. The symbol of Russia is the Spasskaya tower. You can see it on the Red Square in Moscow.
4. This clock tower is famous because it's Westminster Abbey's tower.
5. The English Parlament works Westminster Abbey's building.
The Russian Parlament works in the building of the State Duma.