Clue: Herod's legacy depicted in film with a couple of lines (7,4)
Answer: WESTERN WALL
Explanation: Definition: Herod's legacy
A charade of WESTERN ('film') plus W ('with') plus 'a' plus LL ('couple of lines'). The Western Wall, sometimes known as the Wailing Wall, in Jerusalem is a visible section of a longer retaining wall built for the Second Jewish Temple, in an expansion begun by Herod the Great.