After the main cast was announced in February, production is about to get under way on director Ron Howard's Robert Langdon adventure Inferno. is reporting that filming is set to begin at the end of April in Florence, Italy, where shooting will take place until mid-May. Production will then move to Venice, Italy and then Istanbul, Turkey.

Inferno is the third adaptation of Dan Brown's Robert Langdon novels, following The Da Vinci Code (2006) and Angels & Demons (2009). Tom Hanks returns as Harvard symbologist Robert Langdon, who wakes up in an Italian hospital with amnesia. Felicity Jones plays Dr. Sienna Brooks, who helps Langdon recover his memory and unravel a terrorist plot that has ties to Dante Alighieri's literary classic Inferno.

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The supporting cast includes Omar Sy, Irrfan Khan and Sidse Babett Knudsen. We also reported earlier this month that Ben Foster is in talks to play the villain. Ron Howard is directing from an adapted script by David Koepp, with the director also producing alongside Brian Grazer. Dan Brown, Anna Culp, Bill Connor, and David B. Householter are serving as executive producers.

In related news, Ron Howard has posted a number of behind-the-scenes images, featuring models that the production team is using to map out the adaptation's opening sequence. The models depict the Badìa Fiorentina, which also has a connection to author Dante Alighieri and serves as the opening location in Dan Brown's novel. Take a look at the photos below, and stay tuned for more details on Inferno.