<P> In a 2015 interview with IndieWire, Gray admitted that he had developed the script for a while before moving toward production . He explained that the film was a "very complicated production and the story is amazing, but it's a complicated story . And you want to get it right . It's a very, very scary proposition to go into the jungle and all that . But at the same time it's terrific . It's why you make movies ." </P> <P> The lead role underwent numerous casting changes . Brad Pitt was initially to star as Fawcett, additionally providing production duties through his company Plan B Entertainment . In November 2010, Pitt withdrew from the lead role due to scheduling conflicts, but remained attached as producer . On September 4, 2013, Benedict Cumberbatch came on board to portray Fawcett, along with Robert Pattinson, who joined the cast in the role of Costin . In February 2015, Cumberbatch dropped out also due to scheduling conflicts, and was replaced by Charlie Hunnam, while Sienna Miller was cast as Nina Fawcett . </P> <P> Principal photography began on August 19, 2015, in Belfast, Northern Ireland, and continued for five weeks until late September . On August 28, the production shot at Greyabbey Village and Strangford Lough in Northern Ireland . Hunnam and Miller filmed scenes at Ballintoy County Antrim on August 31, and further shooting took place at Craigavon House, East Belfast on September 2 . </P> <P> Hunnam, Pattinson, Miller and Macfadyen shot scenes at Methodist College Belfast on September 3, 2015 . On September 7, 2015, scenes were filmed at Belfast City Hall and on the grounds of Royal Belfast Academical Institution . Scenes were also shot at Bangor Castle Leisure Centre on September 13, 2015 . Filming then moved to Santa Marta, Colombia, and continued through September and October . </P>

When was the lost city of z filmed
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