This is not something that happens on the daily basis. An illusion made by a British sculpture has sent a man from Italy in his 60s to hospital.
Descent Into Limbo (1992) is a 2.5m deep dark hole similar to an abyss installed in the middle of the floor inside a massive concrete cube with a single way to get in and out.
These sides of the wall add to the illusion as they are coated in black pigment and making it a depthless void.
According to the reports, the museum has taken the full guarantee of no further mishappenings of this type. Also, the warning signs will be added as soon as possible.
1 Here are some more optical illusions to amuse you: