TH 2058 - Dominique Gonzales-Foerster

The current Tate Turbine Hall exhibit may not be as immediately engaging as some past ones, but it does improve on acquaintance.

TH.2058 looks 50 years into the future to a London of incessant rain and sculptures kept from growing like weeds. The installation itself lets you wander through, discovering as you go, you can read the full story here.

In addition, you can write a story and be part of it. You've got up to the 1st February. Some of the entries aren't bad.