The Last Opium Den is an investigative journalism/travel book by Nick Tosches.

It was originally an article in Vanity Fair, where Tosches is a contributing editor.

Tosches travels the world (in particular, Southeast Asia) seeking the titular establishment.

He also spends time discussing the heroin/opium trade, the history of opium dens, wine tasting, and the historical use of opium to treat symptoms of diabetes.

You can help Wikipedia by expanding it.This article about a travel book is a stub.