One of my favorite books all of times is Erik Larson’s, The Devil in the White City: Murder, Magic, and Madness at the Fair That Changed America.
The book is set in Chicago in 1893, intertwining the true tales of Daniel H. Burnham, the architect behind the 1893 World’s Fair (also known as the Columbian Exposition), and Dr. H. H. Holmes, the serial killer who lured his victims to their deaths in his elaborately constructed “Murder Castle.” The hotel included a gas chamber, a crematorium and a dissecting table, and, Holmes was known for actually selling the skeletons of his victims for scientific study.
Recently, in the Chicagoist, Mae Rice, posted a visualization of a dollhouse view of how H.H. Holmes’ infamous murder castle looked.
Holmes designed the place himself, and had it built in Englewood, where it took up an entire city block. It was finished in 1892; in 1893, he advertised the structure as a hotel during the World’s Fair.
Recently, director Martin Scorsese and esteemed actor, Leonardo DiCaprio, acquired the rights to make the movie adapation of the book, so I am definitely on the lookout for this.
This rendering from Imgur shows the dollhouse view of the creepy, intricate building: