The image shows a superimposed representation of Tokyo on main island of Great Britain, with the size of England's capital city of London (and my place of birth) placed conveniently within a red oval.
For the record, Tokyo is the current capital of Japan. It's former name was Edo, changed in 1869, after the then-17-year-old Emperor Meiji moved to the city, and in accordance the city was renamed Tokyo (meaning Eastern Capital).
Metro Tokyo is:
- 13,572km2 (5,240 square miles) - Metropolis 2,187.66km2 (844.66 square miles);
- 37,800,000 people as of 2015 - Metropolis 13,617,445 people.