Shibuya is one of the cities in Tokyo. Famous for Shibuya Crossing. Also famous for being the heart of Japanese youth culture. I used to visit Shibuya when I was a student. There are many shopping malls for young people in Shibuya. Exactly Siam is the same.
The 10th Madame Tussauds in the world is on the 6th floor of Siam Discovery Center, Bangkok
Bangkok Art & Culture Center is a 9-story art museum. Free admission, but admission is required for some exhibits.
[Bangkok Art and Culture Centre] https://en.bacc.or.th/