New England's first Legoland Discovery Center opens on Friday.
A grand opening celebration is planned for the family attraction at Assembly Row in Somerville, Massachusetts.
The 44,000-square-foot Legoland Discovery Center Boston features millions of bricks for an interactive experience geared for children 3 to 10.
There are also LEGO rides, a 4-D cinema and replicas of Boston landmarks made from the interlocking plastic bricks.
Tickets for opening weekend are already sold out.