Buckingham Palace is probably London’s most famous building and is still a working palace and home to the Queen. You can witness the famous changing of the guards at Buckingham Palace that takes place every day at 11:30 am.
PARIS NOTRE DAME
Paris Notre Dame is a Paris Cathedral and one of the finest examples of French Gothic architecture. It’s free to enter but if you want to go up into the towers, you will need to pay. There are many things to do around Notre Dame such as watching the street performers or sitting in a local cafe for a bite to eat.