All attractions and hotels at the 95-hectare Europa Park would be open as usual, apart from the fire-affected area, a park spokesman said.

The blaze erupted yesterday afternoon in a technical room of the indoor walk-through attraction “Magic World of Diamonds”, which features animatronic dwarves working in a diamond mine and a dragon.

A log flume ride and a roller coaster pass through the area.

The cause of the fire was still under investigation, the spokesman said this morning.

Safety mechanisms such as fire detectors and alarms had worked as planned, said police.

More than 450 firefighters, police officers and other emergency responders were deployed to the park, located near Freiburg by the French border.

Two firefighters were slightly injured.

Around 25,000 people were in Europa Park when the fire broke out.

The visitors were asked to leave the park in an orderly manner.