The best replacement for bay window is bow window.

The best alternatives to bay window are rated as following:
★★★★★  bow window
★★  picture window
★  oriel window
★  garden window
★  bow
★  regular window
  split window
  bow windows

Your alternative for bay window is not listed? Suggest!
Speaking about bay window, one probably shouldn't forget about window seat.

Other search terms related to bay window and their ratings are:
★★★★★ window seat
You have in mind a companion for bay window and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of bay window in all years. Click on graph for more.
bay window
bow window
picture window