Ok guys... time to continue the game

Where was this photo taken?

So quickly )
Yep, Seoul. What place?
Small hint on the next photo. Not Gundam

BUT WHERE IS SOMETHING BTC RELATED ON THE PIC
THAT WAS THE NEW STANDARD

Oh.. really? I missed something

The whole country is BTC related! But haven't seen here crypto-related advertisement of smth like this

Is that right most flag a company logo of an exchange?