AirMax SeaMax M-22 ultralight amphibious aircraft above Hämeenlinna church. Most likely OH-U526 which had participated in Kuumaa Huumaa 2012 aviation event.
<a href="//commons.wikimedia.org/wiki/User:MKFI" title="User:MKFI">MKFI</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>