i'm looking for a program (preferably for linux) which i can browse through a 3d digram of say a house. i know there are architecture and design programs (for windows most that i've seen) but i'm looking more for one which displays blueprints. can autocad do this? what about something more simplified...and preferably free.

i've checked out linux.box.sk and a few other places, so i have a general idea of what's out there. i was mostly wondering if there was a particular program that anyone finds useful.//
Unbodied unsouled unheard unseen
Let the gift be grown in the time to call our own
Truth is natural like a wind that blows
Follow the direction no matter where it goes
Let the truth blow like a hurricane through me