At a construction site within one of the most famous buildings in Tokyo, called Roppongi Hils. Neither of me and my friend had known the word, 'off-limits.' I was more familiar with the phrase 'no entry' that holds a similar communicative purpose.
Somehow it took us awhile to reach the Indian curry restaurant at which we had planned to have lunch. Until we finally located it, we explored the building that looked so complex with lots of levels and shops up and down. After lunch, however, we felt we had got used to it, and it was then we came across this sign.