Question: where did they film the book of eli?
Answer: New Mexico, in New Mexico

In May 2007, Columbia Pictures and Warner Bros. signed the Hughes brothers to direct The Book of Eli, based on a script by Gary Whitta. (The brothers had last directed the 2001 film From Hell.) Subsequently, Anthony Peckham rewrote the script, and in September 2008 Denzel Washington won the lead role. The following October, Gary Oldman was cast to star alongside Washington. Principal photography began in February 2009 and took place in New Mexico.  Alcon Entertainment financed the film and co-produced with Silver Pictures.