New Artwork Concepts for Alien Covenant by Steve Messing

Cathedral concepts probably were an early outlook of the film, some of them discarded by production and director due the cost.

Hopefully we'll see this next film ... this is actually how I envisioned the Engineer world to look like. 

Yes that early cathedral study is much more like it :) .

I really like the cathedral style

I love checking these concept pieces they really have some great content.

Also who can do that shit? Its crazy how good ppl are it blows me away

EDIT: 

Cathedral design - what  are we thinking this entrance is? Some deformed giant replica egg door?lol

Some interesting Designs here, some of those Designs have a Bio-Mechanical look to them, like the Juggernaught and Scorpion-naught ships Aesthetics... some of these buildings are covered also in like a Web-like Resin Substance.

Very interesting.

This for me is the MONEY-SHOT though.

Those two beings on the Doors look like FEMALE they also appear to have Long Hair

I have speculated for a long time about the importance of Females in the Franchise, i even made a Topic a number months after this theory started to really get my thinking.

The Cause for Sin

And recently i had brought up Females again on a number of Topics for how i interpreted the Engineers reasons for Creation etc.

Seems maybe with this Art-work that my Study of Clues and theory i have been drawn to is actually maybe pretty close ;)

I like them, but I don't like the lack of technology style.

It should have been used in the movie:

And I like the fact that these boys and girls are wearing helmets... They look better.

Thanks a lot for the resonses here.  I really like the soaring towers in some of the images.  It seems that they wanted to go for a low-tech, organic look with stone materials... perhaps hinting that there's another place that's the actual seat of their technology and power.

@BigDave: "Those two beings on the Doors look like FEMALE they also appear to have Long Hair"

I think that you nailed it.  I reminds me of these Giger paintings, with their respective "openings"... quite a good homage: