As we’ve discussed before, windows typically come in a variety of operable and fixed window types, each suited to particular uses, spaces, and climates. Windows not only have the functional aspect of bringing light and air into a space, but they also have a significant impact on the aesthetics of a building or room—and are often sold in standard sizes in the classic rectangular form. However, when a non-traditional window is selected, meaning that the window probably has been custom-made, it can have a big impact on the design of a space, even if it’s not very large in size. Here, we take a look at some unique windows with strong personalities in shapes and places you wouldn’t normally expect.

1) Brick Addition With Porthole Windows

2) Operable Peek-a-Boo Windows

3) Smattering of Windows in Venice

4) Old and New Meet With an Octagonal Window

5) Pair of Perfectly Round Windows

6) Oversized Oriel Window in Harlem

7) Triangular Motif on the Walls and Ceiling

8) Long and Lean Minimalist Windows

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These 8 Unusual Windows Will Take You by Surprise