Several of my first old projets (terraria v1.05 or less), my old main world. But now They are very outdated with v1.2. Need to be worked again but you can give it a look. (Hand-made)
My main Castle. Advanced outpost. Mushroom Ruin area. Hellgate's pillar.
Their originals aspects can be see here: http://www.terrariaonline.com/threads/some-of-my-works.56463/