University of Tokyo is the top university in Japan and there are many traditional structures at Hongo campus. I highly recommend you to visit University of Tokyo when you go to Tokyo. This article introduces the famous structures and their histories.
1. The most famous structure “Akamon” (red gate)

The official name is “旧加賀屋敷御守御門” (Former Kaga-yashiki guardian gate). Maeda family who was the domain of Kaga lived in Hongo area in Edo period. The gate was a guardian gate built by Maeda Nariyasu in 1827. It was registered as an important culture property of Japan in 1950.
2. “Yasuda kodo” (Yasuda lecture room) which is famous for the history

It was built in 1925 and it was named after Yasuda Zenjiro who donated a lot of many for building. However Yasuda kodo is well known because of the history. Some students occupied this building and conflicted the riot police in 1969. This event is called as “Yasuda kodo incident”. Many university students caused student movements to resist the increasing of tuition fees and democratize their universities around 1960s. Yasuda kodo incident is one of the movement.
reference: https://ja.wikipedia.org/wiki/%E6%9D%B1%E5%A4%A7%E5%AE%89%E7%94%B0%E8%AC%9B%E5%A0%82%E4%BA%8B%E4%BB%B6
3. Green spot “Sanshiro ike” (Sanshiro pond)


It was a garden of the domain of Kaga called as Ikutokuen. Maeda Toshitsune got the place from Tokugawa shogun in 1605 and he started arranging as a garden around 1625. It became one of the facilities of University of Tokyo in the first of Meii era. The Natsume Soseki wrote “Sanshiro” (三四郎) appearing the pond.
referencehttps://www13.atwiki.jp/sanshiro/pages/16.html
4. Free museum “The university museum”
You can see a lot of academic specimen used for studies with free of charge.
A regular closing day…Mondays
Opening hours….10-17 (entering by 16:30)
You can check if it is opened through below link.
http://www.um.u-tokyo.ac.jp/index.html
The museum provides special exhibition on a regular basis. The latest special exhibition is about livestock. The exhibition term is from 2nd March to 30th June in 2019.

http://www.um.u-tokyo.ac.jp/exhibition/index_present.html
The permanent exhibition covers very huge academic field from solar system to human race. This exhibition started from 14th May 2016 and you can see at any time during the opening time.

http://www.um.u-tokyo.ac.jp/exhibition/index_present.html
An useful information
Students guide tour
University of Tokyo provides the guide tour by students. If you want to go around listening to the explanation by students, you can reserve from the below link.
https://campustour.pr.u-tokyo.ac.jp/schedule