Where was The Darkest Hour filmed

The Darkest Hour was filmed in Moscow, Russia.

Red Square

In movie

Scene where Sean tries to hide from the aliens.

Real

Scene was shot The Red Square is the most important city square in Moscow, Russia. It separates the Kremlin, the former royal citadel and now the official residence of the President of Russia, from a historic merchant quarter known as Kitai-gorod. The name Red Square originates neither from the colour of the surrounding bricks nor from the link between the colour red and communism. Rather, the name came about because the Russian word krasnaya, which means both red and beautiful.
Moscow Red Square