Say where in London you can1) take a picture of black

Say where in London you can
1) take a picture of black ravens
2)see the monarch in his/her office
3)Listen to spikers
4)walk on the grass and enjoy the beauty of tress and flowers
5)see an ancient castle
6)see the Prime Minister in his/her office
7)look at a good collection of paintings
8)look at the statue of Admiral Nelson
9) ride on a doble-decker bus
10)go to some good shops