What I found impressive was the mix of movie props, design artwork, strange specimens, and artwork from antiquity. You'd see a marquee from Pacific Rim, next to comic book pages from the early 80's, concept art from a Disney film from the 1940's, then a painting from the late 19th century.
The Death Angel, from Hellboy
Illustrated manuscript, from Pan's Labyrinth
The Faun, from Pan's Labyrinth
From Hell, Chapter 8, page 28
From Hell, Epilogue, Page 10
John Atkinson Grimshaw, The Rookery, 1885
Arthur Rackham, The Sleep of Brunhilde, 1980
Charles Altmont Doyle, A Ghost Story, 1860
Charles Altamont Doyle, O: I am So Glad to Meet You, 1888
Models inspired by The Time Machine, 1960
Brian Poor, Phoenix, 2008
Thomas Kuebler, Feejee Mermaid, 2009
Richard Corben, Portrait of Cousin Eerie, 1974
Richard Corben, Portrait of Uncle Creepy, 1981
Basil Gogos, Hellboy, 2004
Insect Effigy, 1200 - 1520. Mexico, Central Mexico, Aztec
Spectral Motion, Kaiju Parasite, 2013. From Pacific Rim
Jamie Beswarick, Xenodefugio Subtiltus, 2009
Christopher Marley, Lanternflies, 2010
Zdzislaw Beksinski Untitled (Apocalypse) 1975
Giovanni Battista Piranesi
Etching from the series Le Carceri d'invenzione (Imaginary Prisons), 1761
Pieter van der Heyden After Pieter Bruegel the Elder
Christ's Descent into Limbo, 1561
Big Fish Eat Little Fish, 1557
Francisco Goya y Lucientes
Etchings from the portfolio
Los Caprichos, 1799
Julio Ruelas
El Reposo del Trovador (The Troubador's Rest) 1906
Laurent Gapaillard, Waterfall, 2016
Giovanni Battista Piranesi
Etching from the series Le Carceri d'invenzione (Imaginary Prisons), 1761
John Lounsbery
Concept art for Walt Disney's Alice in Wonderland, 1951
Eyvind Earle,
Concept art for Walk Disney's Sleeping Beauty, 1959
Eyvind Earle,
Concept art for Walk Disney's Sleeping Beauty, 1959
Mary Blair
Concept art for Walt Disney's The Adventures of Ichabod and Mr. Toad, 1949
Gustaf Tenggren
Concept art for Walt Disney's Pinocchio, 1940
From Pacific Rim
Concept art from Pan's Labyrinth
The Pale Man, from Pan's Labyrinth
Raul Monge,
Concept art for Pan's Labyrinth
Mike Mignola
Concept art for Blade II
Elko Ishioka, Mask, from Bram Stoker's Dracula, 1992
James Ensor, Death chasing the flock of mortals, 1896
Julio Ruelas, Hangman, 1901
Chet Zar, The Evil Eye, 2010
H.R. Giger, The Tourist
Wayne Barlowe, Concept art for Hellboy 2002 and HellboyII: The Golden Army, 2002
Guillermo del Toro, De Ogros, 1989
Christopher Ulrich, Dystopia! "Feed by beast with your blood," 2011
Slattern and Gypsy Danger from Pacific Rim
Ricardo Linares Garcia, Alebrije, 2015
Ryan Matthew Cohn, Beauchene Skull, 2013
Kristen Phillips, Birdipede II, 2015
Bernie Wrightson, Frankenstien
Joel Daavid, Bound by Nature, 2008
Guillermo del Toro, Santi, 2001
Concept art for the Devil's Backbone
Wayne Barlowe, Sargatanas
Moebius, The Great Ancestors, 2006
James Cameron, Concept art for Aliens, 1986
Kay Nielsen, Concept art for Walt Disney's Fantasia, 1940
Felipe Ehrenberg, Alchemist's Diary, 1993
Marc Davis, Medusa, 1969
From Disneyland's Haunted Mansion
Winsor McCay, Gertie the Dinosaur, 1921
Giovanni Battista Piranesi
Etching from the series Le Carceri d'invenzione (Imaginary Prisons), 1761
Giovanni Battista Piranesi
Etching from the series Le Carceri d'invenzione (Imaginary Prisons), 1761