This competition was organized by dragonflies7033 who specified the following criteria:
Choose an existing piece of terrain you have done. Maybe it's your favourite piece, or just one that sees a lot of use. Now build a new piece to go with it. A companion piece. Either an accessory, or an addition, or a neighbouring structure. The competition was won by Ashton
Urban Hill/Platform #2 by Ashton (1st)
The Library by AndySlater (2nd)
N-scale Landing Pad by Froggy the Great (3rd)
Ancient Sacred Spring by grumpy one
Ancients Wargaming Board by exigent99
Terminal 5 (Large Freighter Landing Pad) by dragonflies7033