In Köhln, a town of monks and bones,
And pavements fang'd with murderous stones
And rags, and hags, and hideous wenches ;
I counted two and seventy stenches,
All well defined, and several stinks !
Ye Nymphs that reign o'er sewers and sinks,
The river Rhine, it is well known,
Doth wash your city of Cologne ;
But tell me, Nymphs, what power divine
Shall henceforth wash the river Rhine ?

Samuel Taylor Coleridge

http://www.poemhunter.com/poem/cologne/