This is the Kepler Building, an office complex.
The first picture above is not a hollow shell. It is fully detailed inside and out, including this cube farm. Lisa says this part of the building is the offices of Tundra Forwarding.
Lisa built up all of this using the tools in ActiveWorlds. She very much enjoys this. ActiveWorlds memberships are now free, and if you would like to come and "walk around" her town, ask and we'll give you the details.