Ideas to transform a corner

ShepherdsBarn

i am looking for some ideas to transform a small corner to add interest and/or colour. I have been thinking about a small pond - it would only be approximately 4' square but am looking for other ideas too. Perhaps a garden feature or just take up some slabs to make a border.
Any thoughts appreciated please.
Our 'back' door leads onto this area and is south facing.

Uff

Yes I think you could transform that area into a very nice, colourful sitting out area with not much effort. 
See my sketch below. The top of the wall could have a lovely fragrant climbing rose in front of trellis, say Gertrude Jekyll for example. In the semi circle 5 or 6 slabs could be lifted, the soil improved and rising very slightly towards the back and planted with spring bulbs and colourful perennials that would take over from the bulbs and flower into the autumn. I'm sure others on here will come up with more ideas for you to mull over. A super little project to keep you out of trouble. 

Jellyfire

Little herb kitchen garden maybe? Could grow thyme, rosemary etc in the wall, and a few in pots on the slabs 

Uff

Or if you really fancy a small water feature something similar to this?

Uff

Or a half barrel sunk into the ground with water running into it?

ShepherdsBarn

Thanks @Jellyfire ... we do have a large herb wheel and an apothecary garden - both of which needs 'sorting'! We have live here for 15 years but, until fairly recently, have both worked full time. Now we are retired we have lots of time ... but also masses to do! 🙂

ShepherdsBarn

Lovely design ideas @Uff ... thank you! The trellis idea would look amazing; unfortunately though, we get a lot of westerly winds so I don't think the trellis would stand up to the weather we get here.
The pond looks amazing too ... not sure if it's within our capabilities - I wonder if the featured waterfall is resin ... 🧐. Is that Epimedium on the right? If we go with the pond idea that would be a must - I love it.
All food for thought! 😃

Uff

Thank you @ShepherdsBarn The waterfall was fibreglass/resin type material. The large leaves on the right is cersis canadensis, a tree really but the main stem died off and it sprouted again so I keep it small now. The smaller leaves just below are epimedium.

I don't know what your circumstances are but I tell people that I'm 93 (not true) but I was 20 years younger than that when I dug the pond out, 4ft deep and installed the waterfall and planted it up. 

ShepherdsBarn

Okay ... so we have had a site meeting 😂.  A drain to the septic tank runs from the left, just along your red line, @Uff! We have decided to remove 7 or 8 slabs, dig down (but not too deep due to the pipework ... and our age) and build a low stone wall which will meander to form a kind of 'triangle' shape (though slightly lower than the wall at the back) and will incorporate the pond liner. That's as far as we have got for the moment. 🙂  We're still working on building the well - the stonework is almost complete and the wooden well top started. The pond is the next project. 🙂 👍