It's something that has to be seen to be believed.
An exhibition featuring dozens of artworks created with more than a million colourful lego pieces.
The one-of-a-kind sculptures, many of which represent human figures, were created by New York-based artist Nathan Sawaya.
The former lawyer has been creating artwork from the tiny toy blocks for more than seven years, using just the plastic bricks and glue, but built his first sculpture at 10, after his parents refused to buy him a dog.
Sawaya said he has more than 4 million LEGO bricks in his New York and Los Angeles studios, and has spent nearly 4,200 hours building his collection.
The London exhibition, called 'The Art of Brick', features famous artworks and British symbols created with lego.
"For part of this exhibition, I did take on this project of replicating some famous works of art out of art history," he said.
"I think that was kind of fun because it really let me explore different artists, different masters really, as well as kind of provide this forum for kids to learn about the art world, because how do you talk to a 5-year-old about the Mona Lisa?"
"Well here's this forum where they see the Mona Lisa built out of this toy and they can connect with it."
