- New, Sealed, Unopened. LEGO 10217 Diagon Alley was a 2,025 piece Harry Potter set with 12 minifigs released in 2011. It was retired in January 2013 with a lifespan of 24 months. Number: 10217 Name: Diagon Alley Theme: Harry Potter Year: 2011 Age Range: 14+ Packaging: Box Dimension: 58.2 x 37.8 x 8.7 cm (22.9 x 14.9 x 3.4 in) - Will be shipped ASAP once payment is received. - This item comes from a smoke-free home. - Please feel free to contact me with any questions.