Tieto Keilalahti Campus/Microsoft Talo (formerly named Nokia House) is the head office building of Tieto and Microsoft Finland, located in Keilaniemi, Espoo, just outside Helsinki, the capital of Finland.
The campus was built between 1995-1997 as headquarters for Nokia by architect Pekka Helin. It comprises three separate structures: The two most southern parts of the building were built in the early 1990s and the third, most northern part was built in 2000.