Escher museum in Paleis Lange Voorhout, The Hague, Netherlands.
Images by Kent Wang<a rel="nofollow" class="external autonumber" href="https://www.flickr.com/people/kentwang/">[2]</a> and <a href="https://en.wikipedia.org/wiki/User:P%C3%A1rvusz" class="extiw" title="w:User:Párvusz">Párvusz</a>
CC BY-SA 2.0
<table class="layouttemplate" style="margin: 0.5em auto; width: 100%; background-color: #f8f8f8; border: 2px solid #e0e0e0; padding: 5px;" lang="en" dir="ltr"><tbody><tr><td style="padding:5px;"><div class="wpImageAnnotatorControl wpImageAnnotatorOff"><a href="//commons.wikimedia.org/wiki/File:Applications-graphics.svg" class="image"><img alt="Applications-graphics.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Applications-graphics.svg/45px-Applications-graphics.svg.png" decoding="async" width="45" height="45" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Applications-graphics.svg/68px-Applications-graphics.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Applications-graphics.svg/90px-Applications-graphics.svg.png 2x" data-file-width="48" data-file-height="48"></a></div>
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<td style="width:100%;">This  is a <i><b><a href="https://en.wikipedia.org/wiki/Image_editing" class="extiw" title="w:Image editing">retouched picture</a></b></i>, which means that it has been digitally altered from its original version. Modifications: <i>artwork on advertising banner replaced with blank canvas, then artwork</i>.  Modifications made by <a href="//commons.wikimedia.org/wiki/User:Tony_Wills" title="User:Tony Wills">Tony Wills</a>. The original can be found here: <a rel="nofollow" class="external free" href="http://farm1.static.flickr.com/23/31674375_376cc51c43_o.png">http://farm1.static.flickr.com/23/31674375_376cc51c43_o.png</a>.
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</td></tr></tbody></table><a rel="nofollow" class="external autonumber" href="https://www.flickr.com/photos/kentwang/31674375/">[1]</a> (<a href="//commons.wikimedia.org/wiki/File:Escher_museum.jpg" title="File:Escher museum.jpg">File:Escher_museum.jpg</a>) combined with <a href="//commons.wikimedia.org/wiki/File:MCEscherParvusz.jpg" title="File:MCEscherParvusz.jpg">File:MCEscherParvusz.jpg</a>