The amazing floating airport for London is a conceptual proposal which is released by Architecture firm Gensler. It is located in the Thames Estuary with terminals connected by underwater tunnels. The proposal comes as the UK government looks at ways to increase airport capacity in Southeast England. It is called “London Britannia Airport”, it would include 4 floating runways tied to the seabed and leaving concourses leading to underwater rail tunnels, which would connect passengers to central London as well as European rail networks. Passengers coming by car would travel to three land-based terminals – two located north and south of the estuary and a third proposed between Canary Wharf and the Olympic Park. Check it out!