You're not going mad NJ. :-)
Abaton, from Sir Thomas Bulfinch's My Heart's in the Highlands (1892), is a Scots town of variable location, somewhere between Glasgow and Troon. It isn't exactly inaccessible, but somehow no one has yet been able to actually get there. Travellers who've tried to reach Abaton have been known to wander for years and decades without so much as a glimpse of the town. Some rare few men and women have seen it, however, usually at sunrise or sunset, rising slightly above the horizon. The sight of the town affects those who see it most strongly, sometimes bringing great joy and other times great sorrow. No one has ever seen the inside of the town and described it, but the exterior of Abaton is said to be walls and towers of blue, white, fiery red, or yellow, and it is said that a distant and faint music similar to a harpsichord's can be heard coming from the town.