I think unless you are up very high, most tall distant things are covered by buildings and mountains.
If you are in, say, the eastern part of cairo, you might be only 20km from the pyramids of giza. However if there was a normal sized house even just 1km away in the same direction, it would be big enough to cover the pyramids entirely.
Then there is also mountain ranges. Even if you were on top of the Burj Khalifa with a really good telescope, multiple mountains would block your view. You would need to be multiple Burj Khalifa’s higher up in the air to see the pyramids of Giza from there.
And then there’s clouds, fog, dust, smog and last but not least atmospheric scattering of light, obscuring things more and more the further away they are.
I think unless you are up very high, most tall distant things are covered by buildings and mountains.
If you are in, say, the eastern part of cairo, you might be only 20km from the pyramids of giza. However if there was a normal sized house even just 1km away in the same direction, it would be big enough to cover the pyramids entirely.
Then there is also mountain ranges. Even if you were on top of the Burj Khalifa with a really good telescope, multiple mountains would block your view. You would need to be multiple Burj Khalifa’s higher up in the air to see the pyramids of Giza from there.
And then there’s clouds, fog, dust, smog and last but not least atmospheric scattering of light, obscuring things more and more the further away they are.