The Wyrd House was easy to craft because it's not very big thus not really worth it. The Celestial Observatory, Watchtower Hall, and Treetop Getaway seem to be 10 times as hard as the Wyrd House since they're bigger and 1 house has a battle circle.
The moment I first saw the Watchtower Hall in Grizzleheim, I knew I wanted it. It was very involved. It took forever, cost a ton, but it was well worth it. It's beautiful, holds a lot of stuff, has some neat areas.
I worked for it from the time I got to Grizzleheim and completed it after I got to Dragonspyre.
Now, if they can make it where I can stock the ponds with the fish I catch, that would make it awesome.