The Largest Roof...?
The Dome (O2) actually has the largest roof in the world
The new millennium officially started in Greenwich, England on 1st January 2001; The World's biggest dome was built on the Meridian Line (The Prime Meridian of the World) in Greenwich to celebrate this historic event.
And it here that the Dome - or the 'O2' as it is now called - still presides, which is surprising after a public and political outcry into the cost of construction... it is big but not 'knock-downable'.
And it is this 'big' word that enables the O2 to lay claim to have the largest roof in the world. Don't just take my word for it, have a look at the map below - massive!