About 20 miles.
2
A few.
6
millions.
The Crystal Palace burned down in 1936 and only the concrete plinth remains.
11.42km. About 10 miles by road.
Over 6 billion people
49
115 miles
91 miles
One of them.
no it was constructed of glass wood and cast iron. It was used as a great exhibition hall and held many innovations of the industrial revolution.