An fictional water airport at Lake Kilpisjärvi in northern Finland.

From Wikipedia:
Kilpisjärvi is a village in the municipality of Enontekiö, Lapland, Finland. It is located in Finland's northern "arm" near the very northwesternmost point of Finland.

Although Kilpisjärvi is one of the largest villages in Enontekiö, it is still quite small. In 2000 its population was recorded as 114. Like most Sami villages, Kilpisjärvi is built mainly around one major road, Käsivarrentie, or the "Arm Road" and Neljäntuulentie, or the "Four Winds' Road" — also known as E8. Near Kilpisjärvi is the highest point of Finnish road network, at an elevation of 565.8 m.[1]

Kilpisjärvi has its own school and a hotel, and the northernmost research station of the University of Helsinki is situated there, as well as the KAIRA research facility. The best-known tourist attractions in Kilpisjärvi are the Saana fell and the "three-country border point", a monument at the border point of Finland, Sweden and Norway, located at approximately 69°03′36″N 20°32′56″E, roughly 2.5 km northwest from the end of Lake Kilpisjärvi.