Riddle

There is an ancient invention, still used in some parts of the world today, that allows people to see through walls. What is it?

Choose an answer

A.A telescope
B.X-ray vision
C.A periscope
D.A window.
Hint: It's a 2-word phrase with 7 letters, starting with "A".

Answer

A window.

Why this is the answer

A window is a hole framed in a wall that lets you literally see through it, unlike solid walls.

This riddle is filed under How, What, Why Riddles and rated Easy.