Tate Modern - new art exhibition (you can't see it) and there is a crying room

A new art installation opens today at the Tate Modern. There's just one snag - you can't actually see it.

Walk in to the Turbine Hall and you'll find a plain black floor. The portrait hidden underneath can only be revealed using body heat.

In other words, by getting a very large number people to lie down on it at the same time.

Away from the floor portrait, the most interesting part of the installation is arguably a small side room off the side of the hall.

This is the crying room.

An organic chemical compound is constantly pumped into the air, which naturally makes your eyes water when you enter.

The sensation is similar to the one you get when chopping onions - where tears often stream from your eyes whether you like it or not.

Read more about it here

Would you go to see this? What do you think about the subject matter?