Sentence:  Avoiding the popular “Wolfe collection,” whose anecdotic canvases filled one of the main galleries of the queer wilderness of cast-iron and encaustic tiles known as the Metropolitan Museum, they had wandered down a passage to the room where the “Cesnola antiquities” mouldered in <WSD>unvisited</WSD> loneliness. 
Meaning of the word marked with <WSD> tags:  Not visited.