GranTeCan is the biggest optical telescope in the world, and it’s hard to convey the sheer size of it in a photograph. The telescope itself weighs 485 tonnes. You could fit an tennis court inside the dome, and the top of the dome is 41 m above the ground. But you can’t see any of that in a photograph.
Luckily for me, the engineers did some maintenance on the massive dome recently. Once you have people in the photograph, you get an idea of the size.
