A FIRE raged through one of Copenhagen’s oldest buildings hosting art pieces today, causing the collapse of the iconic spire of the 17th-century Old Stock Exchange.

Passers-by rushed to help emergency services save priceless paintings and other valuables.

The blaze broke out on the building’s copper roof during renovations, and police said it was too early to say what caused it.

The building with its distinctive 184-foot spire in the shape of four intertwined dragon tails has been a major tourist attraction next to Denmark’s parliament, Christiansborg Palace, in the heart of the capital.

“A piece of Danish history is on fire,” Prime Minister Mette Frederiksen wrote on Instagram, saying that it hurt to see the loss of such “irreplaceable cultural heritage.”

Ambulances were at the scene but there were no reports of casualties.

Artworks were carried to the nearby parliament and national archive building.

The exchange was built in 1615 and is considered a leading example of Dutch Renaissance style in Denmark.

The Chamber of Commerce moved into the building after Copenhagen’s stock exchange left in 1974.