It's 25 years since the Berlin Wall came down, arguably one of the most significant moments of the late 20th century.
Most people will remember the images of people joyfully climbing across from East to West Berlin for the first time in nearly 30 years, or of those on both sides finally destroying the wall that had demarcated where Communism and Capitalism collided.
And it's very much with the visual in mind that Berlin is planning to mark the quarter-century anniversary on November 9th.
The city has created an installation called Lichtgrenze, a “symbolic frontier of lights”, which is made up of thousands of balloons that will be illuminated during the anniversary weekend.
The installation measures 15km long and stretches along the course the wall once took, including the infamous Checkpoint Charlie. According to organisers, it represents “a symbol of hope for a world without walls”.
There will also be a series of events to commemorate the historic event, with guided tours, exhibits, films, oral histories and bicycle trips around the city.
Here is what it will look like from the sky: