Fabulous yard. Does the concrete trough need to be lined, or is poured concrete sufficient to maintain the water feature?

Thanks for the question and interest.
There is a waterproof membrane within the trough that extends above the water line, hidden behind a stainless steel band similar to how pool tile would hide the transition between waterproofing and the coping.

Is the wall custom made? I would love to have this wall in my backyard.

Yes, the wall is our (MTLA) custom designed. We are glad you like it.

Where can I read the rest of the paragraph? I went to your website and could not find the 'Ten residence" I would love to know if you put in an outdoor screening room, sounds like it

Please read the updated project description. However, to answer your question directly -- MTLA mounted a large retractable movie screen to the side of the garage.

This is so beautiful. Can you tell me if this was a custom water feature? Thanks!