Lego’s latest flagship store opened Thursday in London’s Leicester Square. The two-story megastore—complete with a life-sized London Underground train car made up of 637,903 bricks—is the largest of its kind in the world.
The new Lego store covers 9,800 square feet and contains a 20-foot replica of Big Ben that took 2,280 hours to build (and has a working clock face, naturally). Unique to the new store is a “Mosaic Portraits” system, where participants are presented with instructions and the bricks to create their portrait after having their photo taken in a special booth.
Have a look inside the new building, the world’s 131st Lego store:
![](https://api.time.com/wp-content/uploads/2016/11/mosaic-maker-1-lego-store-london-embargo-17-11-16-copyright-lego.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2016/11/london-underground-carriage-lego-store-london-embargo-17-11-16-copyright-lego.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2016/11/lester-lego-store-london-embargo-17-11-16-copyright-lego.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2016/11/ground-floor-interior-1-lego-store-london-embargo-17-11-16-copyright-lego.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2016/11/first-floor-interior-1-lego-store-london-embargo-17-11-16-copyright-lego.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2016/11/pick-a-brick-lego-store-london-embargo-17-11-16-copyright-lego.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2016/11/london-underground-map-lego-store-london-embargo-17-11-16-copyright-lego.jpg?quality=75&w=2400)
![](https://api.time.com/wp-content/uploads/2016/11/skyline-mosaic-lego-store-london-embargo-17-11-16-copyright-lego.jpg?quality=75&w=2400)
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Write to Kate Samuelson at kate.samuelson@time.com