Ther is no entrance fee for Ueno Park

Closed on Mondays and open from 9am- 5pm weekdays. Friday and sat 9am - 8pm. Should be open during your visit. Adult: 620 yen each bought through a vending machine. Teens and younger free.

it means it will be closed on tuesday as well as 28-1Jan.

yes its worth its a freat place

I would send an email to the museum and see if they would work with you or have an answer. The museum was a great place to visit, and if you had a business meeting/party there you would all truly enjoy the experience.

Hello. It is opening 24 to 27 December .(2015) The following is the official site information . ---- Days Closed : Every Monday (If Monday is a national holiday, the Museum is open Monday and closed the following Tuesday.) Year-end / New Year holiday (December 28 to January 1) ---- Search in the National Museum of Nature and Science, Tokyo （Popular name "Kahaku"） Select English , "Information for Visitors" -> "General Information" -> "Days Closed" I recommend the repeater 's Pass . I can admission many times free of charge for one year at an annual fee of 1,030 yen . ※ special exhibition will be another charge . It is accepted by Japan Gallery B1F General Information Desk .(Near the entrance) I recommend the free lockers near the Japan Gallery B1F lounge .(100 yen will return) ※ However, it is filled to not go faster. (9:00 This is a start) ※ Lockers is also on the outside of the Global Gallery . No food and drink is allowed in the exhibition room . If there are small children , you can put water bottles and snacks in a locker , it is recommended that you eat in the lounge at the break .(Especially on a rainy day) Have a nice trip. :-)