Lego is universal, genderless, ageless.
Lego goes beyond countries, boundaries, cultures and even kids and adults or man and woman. Everyone can enjoy. My son loves Lego and so do I. We have been to the Legoland in California, and this one in Tokyo which is not as big. However, we always enjoy the visit. The Tokyo landmarks in Lego are quite amazing and makes you feel like you have visited all those places. Asakusa temple, Tokyo Tower, Sky tree, Shinjuku high buildings, the Shibuya's busiest crossing. You name it, there is Lego version. And the day and night version. The play structure makes the kids go wild and make them sweat. There are a few rides there to enjoy. And some spaces of Lego playing areas, and you can create your own race car to race against your friends. You could spend all day there and we usually do even though the place is not huge. But the location in Odaiba is so good that you also wanna visit other places if the time allows. In Odaiba, there are so many places to go, shop, and to see. So make sure you don't spend all day and all night there but have some time to explore the area.