Along with civil society organisations and major companies from the building and real estate industries, they agreed to launch an international network to help meet planning and construction challenges, including transitioning to more sustainable energy sources.

"Its aim is the sustainable, quality-oriented management of buildings, infrastructure, public spaces and landscapes for the benefit of all," a statement said.

The alliance was created to pursue goals set out in the so-called Davos Declaration aimed at "high-quality Baukultur for Europe", which was adopted in 2018.

"Good Baukultur has never been as important as it is today. There can be no sustainable development without it," said Berset, who also serves as Switzerland's interior minister.

A commitment to high-quality building culture is "an indispensable part of achieving a swift energy transition," the statement said.

It can also help "combat increasing overdevelopment and enables cities and villages to evolve to meet the needs of an inclusive and diverse society," it said.