Filming on a third series of Da Vinci's Demons is due to start later this month, it has been confirmed.
The US/UK blockbuster, set in Renaissance Italy, will again be filmed in the Swansea, Neath and Port Talbot areas.
A UK premiere of the final episode of season two was held at the National Museum of Wales, Cardiff on Tuesday night.
The next season is expected to air on Fox channels in 2015.
The historical fantasy is produced by the BBC Worldwide-owned Adjacent Productions and is shown in 120 countries.
Jane Tranter, head of the company said she was "thrilled" that filming for 10 more episodes would start on 23 June.
"The international success of Da Vinci's Demons is due in no small part to the supremely talented production talent based in Wales helping us make a world class drama series for the international audience," she said.
The first series, based on the early life of artist Leonardo da Vinci and starring Tom Riley, used the former Ford factory in Swansea as a studio set.
Locations like Margam Castle also featured, recreating 15th Century Florence.
The series was created by David S Goyer, who was writer of Man Of Steel, Batman Begins and The Dark Knight.
The production has so far also provided more than 100 work placements for students and graduates, while the Welsh government has supported a programme for two location manager trainees to work alongside the crew.
Economy Minister Edwina Hart said: "The benefits to local businesses, people and the wider Welsh economy so far have been considerable."