Our house was built Jan, 2007 so it's not real exciting (modular picked off a lot). It's nice, but nothing to write home about.
Now, the house I grew up in was built right after the civil war (1871 I think, but don't hold me to that). It was beautiful! Full basement and 3 additional stories, hardwood floors on all 3 floors, hand carved banisters, carved molding around the doors, antique crystal chandliers. It even had carved wooded doors that slide into the wall to separate the dining room from the front "parlour". It broke my heart to sell it after mom died but it was also gas heat and the heating bills were outrageous!
It was so cool some of the things we found though. For example, my parents decided to strip the walls (plaster) in the dinning and living room in 1987. Under layers of paint, we found signatures of previous owners dated 1877. And, when I was cleaning out the house for sale, in the attic there is a little storage room with a cubby hole I didn't know about. In there, we found an old parasol and letters dated in the 1920's.