In 2005, Banksy travelled to the West Bank, where he painted the security fence at Bethlehem with a trompe-l’oeil scene of a hole in the concrete barrier, revealing a beach on the other side; it looked as if someone had dug through to paradise." Read more http://www.newyorker.com/reporting/2007/05/14/070514fa_fact_collins#ixzz1oE9rF9qc
The Walled-Off Hotel: Banksy-Designed Rooms Overlook West Bank Barrier
Some sources report that the British graffiti artist Banksy made only 6 graffiti in the Occupied Territories. Here are at pieces of art from the West Bank (most of them, on the Separation Wall) that are often attributed to the master's hand.
Inside this wall stood a tower over 3.6 metres (12 ft) high, containing an internal staircase with 22 stone steps. The wall and tower have no known precedent in human culture, and would have taken a hundred men more than a hundred days to construct. - Old Tower in Jericho - Israel