[Kaiwen]

You can't be serious. The stamp says literally "Blessed Eid" (Eid Mubaarak), which is the standard Eid greeting. The 'two towers' are the long a (aa) and part of the k in Mubaarak. They are letters. That's the only way they can be written, even in calligraphy. They have to be 'tall'. Try writing a 't' in calligraphy without making it tall, or an 'l'. Same idea. T's and L's may look different in different styles of calligraphy, but if they aren't taller than a short letter like an 'a', they aren't exactly a 't' or an 'l', are they?

[Dialup Llama]

>That's the only way they can be written, even in calligraphy.

Look at some examples of decorative calligraphy. They can make birds and all sorts of stuff out of letters. To make Twin Towers out of letters would not be a problem. Look at the letters. Other designs are possible. One alternative design would be to emphasize large, circular loops. Instead the calligrapher highlighted extended, dual vertical strokes, making Two Towers out of them with debris falling from out.