On the way to visit Godzilla, there is an excellent Ramen shop "Tenkaippin" which features Ramen noodles served in a rich soup stock. The headquarters of this chain is located in Tokyo. The shop is always crowded but the place is clean and the service is good and the food is excellent. A great place to go when you want Ramen noodles in a rich, savory broth.
A review of Ramen Shops in Tokyo
Tenkaippin Website in Japanese