Analysis of information sources in references of the Wikipedia article "Beyond Skyline" in Malay language version.
...cinematographer Christopher Probst (Mindhunter) stops to admire the fact that he's shooting a good chunk of this movie in Indonesia (standing in for Laos)... setting the humans' final stand against this invading, grey matter sucking horde on the steps of Yogyakarta's Prambanan Temples.
... Once we landed Frank [Grillo] in the fall of 2014, we had to shoot pretty quickly because he had so many other projects in his schedule. So we started production in December...we finished everything in Toronto, the only place in North America you can shoot on real subway tracks, in May 2015.
The film was shot in Toronto in Canada, and Batam and Yogyakarta in Indonesia, including at Prambanan temple.