1. The main monuments in London & Washington This is Big Ben, in London

2. The main monuments in London & Washington D.C. This is the White House, in Washington D.C

3. The main monuments in London & Washington D.C. These are the Houses of Parliament in London.

4. The main monuments in London & Washington D.C. This is the Lincoln Memorial, in Washington D.C

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6. The main monuments in London & Washington D.C. This is Buckingham Palace, in London

7. The main monuments in London & Washington D.C. This is the Tower of London, in London

8. The main monuments in London & Washington D.C. This is the Obelisk, in Washington D.C

9. The main monuments in London & Washington D.C. This is Tower Bridge, in London

10. The main monuments in London & Washington D.C. ???

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