In the major castle towns such as Kyoto and Kanazawa, those merchant houses that were built on deep and narrow lots were also referred to as eel's nest.
その中でも京都や金沢などの大城下町では特に奥行が深く、極端な短冊の敷地に建てられた町屋は「うなぎの寝床」などと呼ばれることもあった。