Part of the Virtuelles Koeln, Second Life’s Koelner Dom is the work of Cologne-based Seminal3D and communications provided by Medeya:

The RL building was started over 800 years ago, but was not completed until 1880 – a grand total of 632 years in the making. The SL building, on the Koelner Dom sim, took rather less time. Even so it is (or so I’m told) a 15,000 prim construction. If you are not familiar with SL construction, you will need to take it from me that that is – well – simply huge. I’m not sure that it is that big (yet), since in the current phase it still needs a lot of the interior work completing – a task that will be carried out over the next few weeks.

Interesting that the same time corporations are leaving Second Life, projects such as the Second Life’s Koelner Dom go on.