Health boards have repurposed existing buildings, including the Principality Stadium, a holiday park and even a television studio to provide an additional 6,000 beds.
Field hospitals are designed to support the NHS during the coronavirus pandemic by providing extra bed capacity but they will also help normal hospital services be restarted and support social care services.
Last month, the first patients were admitted to Ysbyty Calon y Ddraig at the Principality Stadium, in Cardiff.
Here is how Wales almost doubled its bed capacity in less than eight weeks…
Four to six weeks
The time it has taken to nearly double hospital bed capacity in Wales, creating field hospitals across the nation.
19 field hospitals in Wales
This includes the repurposing of Bluestone Holiday Park and Parc y Scarlets in west Wales and Venue Cymru in north Wales.
1,500 beds at the Ysbyty Calon y Ddraig
Making it one of the largest field hospitals in the UK.
The length of time it took to plan Ysbyty Calon y Ddraig, which overlapped with the build phase.
The number of planning hours, involving more than 20 different disciplines, it took to plan Ysbyty Calon y Ddraig.
Welsh Government funding for the set up, construction and equipment for field hospitals in Wales.
The number of pieces of equipment have been provided to help support field hospitals, including beds, imaging equipment, syringe drivers and medicines.
Three North Wales field hospitals have the name Enfys
Meaning rainbow – the symbol of hope and thank you to the NHS during the pandemic.