What about airports, you ask? Heathrow Terminal 5 is huge, but it’s often considered a complex of multiple buildings, not one single structure. Same for the Queen Elizabeth Olympic Park—it’s a district, not a building.
And let’s not forget the British Library. It’s a massive, blocky monster in King’s Cross, storing over 170 million items. It’s huge in volume, but ExCeL still beats it for raw floor space.
The Shard in London - The Tallest Building in Britain - Go Guides
The Fun Comparison Game
So, to recap: If you care about height, you visit The Shard for a drink. If you care about volume, you might check out The O2 Arena for a gig. But if you care about pure, flat size, you bow down to ExCeL.
It’s a bit like asking which car is the best. A Ferrari (The Shard) looks cool parked outside. But a massive truck (ExCeL) carries everything you actually need. Which one would you rather have for a house party?