Callio is located in Pyhäjärvi town in the middle of Finland, 450 km north of Helsinki, and within close distance from collaborating universities – University of Oulu (160 km), University of Eastern Finland (150 km), University of Jyväskylä (180 km). The town, which have 5 500 inhabitants, is named after lake Pyhäjärvi, a lake of 125 square kilometres and rich in fish.
Pyhäjärvi is well situated in an intersection of transport services. The town is located in the junction of highways E75 and 27. There are five airports within two hours drive, with international airport of Oulu being second most serviced in Finland.
The railway connections are excellent. Heavy/large components and bulk materials can be easily railed to the site.