This is one of the smaller Harry Potter LEGO® sets but it is unique. It is one of only three sets that has a cardboard background. The other two sets with a cardboard background are 4722 Gryffindor and 4723 Diagon Alley.
These three sets are also the only three that have neon colored bricks. I'm not sure why Lego did this for just these three sets but when all three go very well together. They do, however, stick out a bit with the other sets that use dusty and muted colors.
Having said that, it's a pretty neat set. This one is of the Hogwarts classroom that Harry Potter ran inside of when he was being chased by Filch while wearing his Invisibility Cloak. It is the room that had the Mirror of Erised and this set includes the mirror, along with an image of Harry's family in it.
Set 4721 - Hogwarts Classroom
Year Released: 2001
Set Number: 4721-1
Name of Set: Hogwarts Classroom
Book Set is Based On: Harry Potter and the Sorcerer's Stone
Number of Parts: 71
Minifigures: 1 - Harry Potter
Creatures: 3 - Frog, spider, and owl
Minimum Recommended Age to Build This Set: 6 years old
There are also various items that students might find in a magical classroom, such as a cauldron, blackboard, and books. Just be careful that Harry doesn't waste away staring into the mirror instead of living his life!
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Image Source: All images are used with permission by atlike
This LEGO® set contains small pieces that could be a choke hazard and is not meant for children age three and younger. LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this site.