The height limitations set forth in this chapter shall not apply to any of the following structures, provided that such structures are compatible with uses in the immediate vicinity: antennas which do not exceed a height of 200 feet and which are accessory to an otherwise permitted use, silos, barns and other agricultural structures, church spires, cupolas, domes, monuments, water towers, fire observation towers, electric transmission lines and supporting structures, windmills, smokestacks, derricks, conveyors, flag poles and masts, or aerials, solar energy facilities, chimneys and similar structures to be placed above the roof level and not intended for human occupancy.