I'll start with two of mine:
The Abbey of Zhambra
A design I once came up with for a church or monastery dedicated to Zhambra. Being the god of friendship and loyalty, his temple should exude an aura of serenity, virtue, and honour, hence I opted for bright stone walls and a verdant garden, inspired by medieval cloisters, just as the overall design is heavily inspired by medieval churches — something rather unusual when one compares it to other temples already existing in Illarion. I'm not very happy with the coned steeple, though, mostly because the spire's roof texture doesn't match the rest of the roof.
The Black Wyvern Hall
A proper guild should have a proper headquarters, and I hope that one day the Black Wyvern Company will have theirs. This is a design for it I've come up with about a week ago. Unlike the church of Zhambra, which was designed to be a place of holiness and purity, this guildhall is the opposite; this is the headquarters of a company of rough and tough mercenaries with few moral qualms, renting their services to those willing to pay. Not necessarily evil, but certainly no do-gooders. Accordingly, the guildhall's dark and grimy aesthetic is supposed to reflect the Black Wyverns' unscrupulous, shady character. Thick, solid stone walls form the compound's foundation and underline the company's martial nature, while the lighter, yet still grimy timber-framed upper floor provides a pleasant variety to the building's otherwise dark and stern appearance. A courtyard with training dummies for sparring and a small workshop to maintain the mercenaries' arms and armour were a must-have. And what roof colour would fit the Black Wyverns better than black?
Players of the classic RTS Age of Empires II may guess which building this design was loosely inspired by.