Here is my one...

It is a 10' X 30" bestway. The white pipe going in a funny angle is just temporary while I wait for a few fittings to turn up.
Full to the top it holds about 7500 litres so it's important to make sure it is on a firm and level surface. Mine is on a 20' X 14' steel reinforced concrete pad 4" thick and has 4" of celotex between the pool and the concrete to insulate the warm water from the cold concrete and also make a nice smooth surface to protect the liner.
I will soon be building decking around it to make it blend in a lot more.
This is inside the plant shed,

From the left is old oil boiler (running on bio), expanson vessel for the sealed system boiler loop, high flow cartridge filter, multi-port valve to use or isolate the filter, or divert flow to waste, stainless steel heat exchanger and finally a two speed 1.5HP pump (100litres per minute on low speed, 300litres per minute on high)