In Jerusalem, where were Jews from Asia when they spotted Paul and stirred up the crowd to seize him?

Answer: At the temple

Jews from Asia saw Paul at the temple, stirred up the crowd and dragged him out of the temple, claiming he had defiled it.

“When the seven days were almost over, some Jews from the province of Asia saw Paul at the temple. They stirred up the whole crowd and seized him,”— Acts 21:27 (BSB)