DIY Natural Pool - Yes Please!
Raising your koi pond above ground like this allows you to see fish swimming…
Great Comp Garden
Raised Koi pond. By Signature Outdoor Concepts
from blog.bcgreenhouses.com Love it! Paradise... #PinMyDreamBackyard
Indoors Koi Fish Pond http://www.fishchannel.com/setups/ponds/koi-indoors.aspx
Ponds don't always have to be in-ground - this koi pond lets you actually observe them under the water, and it looks like the stone retaining wall might work as seating. More
Image from http://www.railwaysleepers.com/files/images/product/Railway%20sleeper%20pond%20WEB0_lg.jpg.
above ground pond - Google Search