Though not remarkable, Vantaa—the municipality north of Helsinki proper and the home of the international airport—has a few notable attractions. A welcome surplus of open green space and trails for biking, hiking, and running create an oasis for outdoor enthusiasts. Don't miss the 15th-century Helsingin Pitajan Kirkko (Parish Church).
Consider using Vantaa as home base if your trip to Helsinki coincides with a convention and you can't find accommodations there: the airport is within the city's municipal boundaries and easily reached by public transport. The Helsinki Card also works in Vantaa.