What is a bay window?

Question

What is a bay window?

Answer 1

Bay windows may be technically defined as windows that protrude out from a building structure. Bay windows form a recess on the inside wall, often leaving room for a platform for a wide variety of uses. Bay windows are typically three windows joined together to form a polygon or rectangle.

Answer 2

also in easier terms--those windows that look like the sill is a bench and you can sit on/at the window from inside and look out.