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Atlas Obscura - Latest • Jan. 12, 2026, 2:51 a.m.
The Illusory Window in Wrocław, Poland
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Hidden in plain sight on Wrocław’s bustling market square is a window that doesn’t quite exist. Known as the Iluzoryczne Okno (“Illusory Window”), this curious architectural feature is painted onto the façade of a Baroque townhouse, giving the impression of a real window where none was ever built.
Its clever trompe-l’œil design was created to maintain the symmetrical appearance of the building, fooling the eye with a perfectly shaded frame and panes that seem to reflect the sky. The building itself is a historic townhouse that now houses the restaurant and hotel Dwór Polski.
The illusion is so convincing that many passersby never realize it is an architectural trick. Visitors can spot the illusory window on the left side of the third floor.
Its clever trompe-l’œil design was created to maintain the symmetrical appearance of the building, fooling the eye with a perfectly shaded frame and panes that seem to reflect the sky. The building itself is a historic townhouse that now houses the restaurant and hotel Dwór Polski.
The illusion is so convincing that many passersby never realize it is an architectural trick. Visitors can spot the illusory window on the left side of the third floor.
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