Tokyo Sky Tree, will open on May 22nd. There will be an observation decks at 350 and 450 meters from the ground. The Tokyo Sky Tree Town next door will house over 300 stores, including child friendly restaurants, an aquarium and a planetarium.
Advance tickets have been selling since November so my advice is to avoid the crowds and wait until at least September to attempt a visit. 15,000 visitors are expected each day.
Location: Oshiage 1-chome Sumida-Ku
Baby facilities: Feeding and changing rooms will be available.
Cost: Adults: 2000 yen to 350 m level; extra 1000 yen to 450 m level
Stroller Friendly: Yes
Baby Changing Area: Yes
Feeding Room: Yes
Child Friendly Restaurant: Yes
Rainy Weather Option: Yes
Party Venue: No