So off rode Sir Geraint, keeping at some distance behind the lady, the knight, and the dwarf. At last, after passing through many woods, he lost sight of them as they disappeared beyond the top of a hill. Sir Geraint rode up, and saw below him, in a valley, the one street of a little town. On one side was a fortress, so new that the stone of which it was built was still white; while on the other side stood a gray old castle, fast falling into decay. He saw the three people he was following enter the fortress... - Sir Geraint and Enid

Link to Sir Geraint & Enid: https://www.heritage-history.com/index.php?c=read&author=warren&book=arthur&story=geraint