Resembling Notre Dame in Paris you won't miss this place easily. The fourth tallest building in Japan, it was finished in 1990. It's 296 meters high and thanks to special shock absorbing pillars and posts, it's supposed to be fully earthquake proof.

There are two observation galleries, one in each tower at 45 floors up. admittance is free (anything free in Tokyo is rare) and the panoramic view is fantastic. On a clear day, you can even see Mount Fuji and Yokohama!

(Open: Tuesday to Friday 9:30 am to 5:30. Saturdays, Sundays and public holidays 9:30 am to 7:30 pm. Closed: Mondays, Tuesdays (if the day before was a public holiday) December 29th - 31st and January 2nd - 3rd inclusive).