If you’ve ever wondered what a retired LEGO mold looks like after producing 120,000,000 bricks, look no further than the top image. This mold was used to produce red 2 x 3 plates in the last cycle of its life, and was at work for around 7 years nonstop, minus maintenance and color changes. Continue reading for more.

5. LEGO Colosseum

Utilizing a staggering 200,000 LEGO bricks, certified LEGO master builder Ryan McNaught – best known as “The Brickman” online – made the world’s first LEGO Colosseum. This creation consists of two halves: one half of the structure in ruin (present day) and the other half as it was in 80 A.D. when Rome’s original Colosseum was built. Due to its bizarre oval shape, it was the most technically challenging project McNaught had ever completed.

4. City of Odan

Brick master Mike Doyle created Odan, a 5-foot-high city made of 200,000 bricks, over a span of eight months and 600-hours. This alien city as the first in a series called Contact, and in his words, Contact is “designed to promote the beauty of all intelligent life forms as extensions of our family – children under the same creative force.” In other words, inside Odan, you can find a place for the “Eternal Choir” as well as a local galactic vacation spot where powerful spiritual food is grown locally and where visitors can enjoy long meditation sessions.

3. LEGO Batcave

Geeks Carlyle Livingston II and Wayne Hussey spent countless hours – 800 to be exact – planning and building the mind-blowing LEGO Batcave you see above. It was first unveiled at Emerald City Comicon back in March 2012 and weighs a hefty 100-pounds. It consists of 200,000 bricks and comes complete a functional turntable for the Batmobile, a moving costume and weapons selection wall, and the BatPlane Lift. Best of all, the cave even lights up using a combination of LED Christmas lights and LED flash lights that all run off of one battery.

2. LEGO Helm’s Deep

This mind-blowing Helm’s Deep LEGO recreation was built by Goel Kim and Big J, capturing the scale of the epic battlescene like no other. This diorama took 6 months, a year of planning, and 150,000 bricks we well as 2,000 minifigs.

1. Hogwarts

Alice Finch took 400,000 LEGO bricks and turned it into Hogwarts, literally, or at least a miniature version of it. According to Brothers Brick, “Alice’s Hogwarts took home both ‘People’s Choice” and “Best in Show” at Brick Con, one of the largest LEGO exhibitions in the world.