Virtual Worlds are not only used to teach architecture, they are used by architects to model buildings so that people can see a prototype what they look like in the setting they are going to end up in and to give the client the opportunity to walk around in the building and modify elements to test options.

Virtual architecture in OpenSim by The Arch Network
You can rent land on The Arch Network grid.
Avalon Town Region of 20 sims is an arts focus region that is chock-a-block with art galleries.
Judyarx Scribe who teaches architecture at University of Auckland.
For historically accurate theatre builds go to Theatron Islands.
A number of different venues from Greek amphitheatres onwards each one has a heavy prim count so are rez on demand, if you have specific times to visit you can book the island and venue of your choice for your session

Accurate architectural builds and reconstructions
  • Sistine Chapel
  • Frank Lloyd Wright
  • Stonehenge
  • Globe Theatre
See also the Religion page