Rendering - gaps in my buildings, ugly screenshots

[Magz_builder]

I'm building a rather large castle, and when I try to take a screenshot from a distance (typically at 200-250 blocks distance, for aesthetic reasons), parts of the building do not render. I typically have two problems:

1. The parts furthest away do not render. I believe that this can be changed by setting the min/max render distance (press keys like +, R, F3). But this is not always satisfactory, as I'd like to include the landscape behind it too, and it just refuses to render a very large picture, totally sacrificing the framerate. (For a screenshot I would accept a 1 fps, which I'd set back to something workable when I got my picture).

2. Walls in the front of my building do not render, and instead I see the staircases that I built behind it. Obviously, when an outer wall is missing, things look weird. Pressing R, F3, + or - does not seem to help with this second issue. Only moving (much) closer helps, but that ruins my screenshot as the angle changes.

Any way to solve either of these two issues? (And perhaps they are related and can be solved simultaneously?). All help is welcome. I'm still quite a noob.

[solars]

You must set the maximal viewing range at the minetest.conf of the client high enough.
For my pictures of Karsthafen with the Devils Tower in the background, I had used this:

viewing_range_nodes_max = 5000

Only the blocks who was send to the client are shown. So set the send distance high enough. I use this at the minetest.conf of the server:

max_block_send_distance = 250

If walls in the front are missing, there are not send yet. Fly to the area with the missing walls and wait for the loading, then go back and make the picture.

[rubenwardy]

Press R to see full range - the fps will be low though.

[Magz_builder]

Excellent. I had not realized that it helps if I walk to the castle, and then back. Walking over to my castle, and changing/adding the two lines of text as solars wrote in the 1st reply helped. (Pressing R also improves the picture, and although I already knew of that feature all replies are welcome).

I'll post a screenshot here on the forum as soon as my project is finished. For now, I'll just collect some while the work is in progress. At least I know how it can be done. Thanks for the quick feedback!