Located in Odaiba in Tokyo, it's about an hour and a half from the base by train. Not too bad if you plan on spending some time out there, which is easy to do, especially since Odaiba is such a fun area (post on Odaiba coming soon!).
Now, this Legoland really doesn't compare to Legoland in San Diego, which is a huge amusement park. Its full name is Legoland Discovery Center Tokyo, which is a pretty accurate description of what it's like. There are only two rides, it's all indoor, and it's much smaller in comparison. But that didn't make it any less fun! Our kids had a blast--I think we spent about 3 or 4 hours there, and my kids didn't want to leave.
In addition to the two rides, they had an awesome Mini Town, which was areas of Tokyo made out of Legos, a Master Builder class where an instructor led a group of kids through building a penguin out of regular blocks, a race car area where you could build a car and then race them down 3 different sized ramps (this was for sure Will's favorite area), a Lego Friends karaoke area, a giant, soft squishy Lego blocks building area, a giant jungle gym, and a Ninjago training run where you had to make it through a tunnel with lasers without touching any of them. So, while not being huge, it definitely had enough to offer our kids and keep them entertained for several hours! Going back will be a great outing this winter when we're trying to escape the cold!
GPS Coordinates: 35.629292, 139.776350