If you're looking for a quiet, lesser-known spot to admire Tokyo's beauty from a reasonable height, this is the place for you. I love that it’s not bustling with tourists or noisy. Bring a cup of coffee and enjoy the sunset as you take in breathtaking views of Tokyo's skyline and, on clear days, the northern mountains. If you're lucky, you might even catch a glimpse of Mt. Fuji. You can access the observation deck directly from Kasuga Station. It’s free of charge and open until 8:30 p.m. However, please note that it will be temporarily closed starting March 1, 2025, so be sure to check if it's open before you visit.

Amazing observation lounge completely free of charge. We visited at around sunset and there were very few people and the lounge was very quiet. The location is easy to find. There are also toilets available and a coffee/drinks machine. You can forget about the paid and overly crowded observation decks in Tokyo and come here instead. On clear days, you can even see a little bit of mount Fuji. I would recommend coming sometime before sunset to enjoy both the sunset and the night view of Tokyo.

Easy access with the metro and just a short cue to the escalator bringing us up to 45 floor. We visited a wednesday at around 10.30 am and it was not crowded. You can choose the south or the north tower. We chose the south. Amazing 360 degree view! Looking all the way to the mountains as well as the sea. It’s all for free. Will go back.

Tokyo’s hidden secret spot. The place is spacious compared to the Tokyo Tower and Tokyo Municipal Building Observatory. Also it is free to visit. You can also see Fujisan on a fine day! It’s near Tokyo Dome.

Free observation deck that was extremely quiet when we visited, seems like most people don't know about it. On a clear day you would be able to see Fuji off in the distance, but unfortunately we couldn't get a full view through the cloud/haze on the day we were there.