These databases cover a variety of subjects and may be good starting points for locating more interdisciplinary information. Because they do not focus on literature, they may not be the best tools for finding literary criticism.
The Cliffs of Insanity in the film The Princess Bride are actually the Cliffs of Moher on the west coast of Ireland.
Whitby, England is the location where Dracula comes ashore in Bram Stoker's Dracula. The cemetery in the churchyard next to Whitby Abbey on the hill overlooking the ocean is said to contain Dracula's gravestone.