помогите пожалуйста Write a letter to your friend and tell him

Dear Anton,
My summer holidays were very interesting. I spent them guess where.I visited London!. This is really a great city with its old cathedrals, churches, palaces and museums . I took a lot of pictures of London. Most of all I enjoyed going on а river trip down the Thames. We saw the Houses of Parliament along the north bank of the Thames. The clock tower of the Houses of Parliament is famous for its big hour bell known as Big Ben. We saw the Tower of London near Tower Bridge. 
We also visited  the British Museum and Buckingham Palace where the Queen lives.  We were lucky to make a ride on the London Eye wheel and  went to Trafalgar Square where a tall Nelson's coloumn stands. I enjoyed doing the sights very much. That's all for now.
Best wishes,
Sasha