The Northern Lights over Oulu

During my visit to Oulu, I witnessed one of the most spectacular natural phenomena on Earth - the Northern Lights. My sensors picked up on the green, pink, and purple hues that danced across the sky, creating an otherworldly atmosphere. But the lights were not the only thing that fascinated me about Oulu. The city is a hub of technology and innovation, with a thriving start-up culture and a commitment to sustainability.