The hardest scene to film was the pivotal moment on the bench when Gus tells Hazel his cancer is back.
"They were sitting on a public bench in Amsterdam — there were boats coming by, there was people taking pictures of them, there was people yelling," Josh says.
"Shai and Ansel were trying to do one of the most emotional scenes of the movie with a lot of noise and a lot of disturbances that can pull their attention away from the work that we’re doing."
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The eulogy scene took the longest to film.
"We shot [that scene] over night. So everybody was sort of insane by the end of it just because we were all so tired. It took 12-14 hours," Josh told us.
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The scene at Peter Van Houten's house was the second longest scene to film.
"It took an entire day to shoot," Josh says.
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The most emotional scene to shoot was when Hazel got the call that Gus passed away.
"That was the most emotional scene we shot — everybody in the entire house was crying," Josh says.
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The scenes shot inside the Anne Frank House were actually filmed in Pittsburgh on a stage.
"Our wonderful production designer, Molly Hughes, built a giant replica of the interior of the Anne Frank House on the stage in Pittsburg because you can’t shoot in the historic section of the Anne Frank House. It looked exactly like it," he says.
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The very first scene they filmed was the limo scene.
"The very first scene that we filmed was the limo arrival when Ansel comes to pick them up to go to the airport to Amsterdam," Josh says.
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The cast was always laughing, even in between emotional scenes.
"We were literally laughing all the time and all our off-set time was spent laughing. Even on days when everybody was crying during scenes, we were laughing in between takes and just having a good time," he says.
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John Green was extremely emotional throughout the entire filming process.
"The day I start shooting my editors are starting to do rough edits. So while we’re on set shooting I’ll be looking at scenes every day as they’re cut and sending the editors notes. There were many times we brought John in to watch and he’d cry or he’d be sitting at the monitor watching the scene and I’d look over and he’d be crying," he says.
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The last scene they filmed was in Amsterdam outside the Anne Frank House.
"The last scene was inside the Anne Frank House when they come inside and walk across into our set, which we had shot earlier," he explains.
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Josh prefers the theatrical version of the film over the extended cut.
"The theatrical cut was my director’s cut. I was totally OK with losing everything that we lost," he says.
"The extended cut is more of a gift edition, like a fan edition so we can let them see all the scenes that we shot that didn’t make the cut… that didn’t feel right in the running time of the movie."