The Arctic Circle is the imaginary line that encircles the northernmost part of Earth, beyond which the sun does not rise on the winter solstice and does not set on the summer solstice. This line crosses the northern parts of Alaska, Canada, Greenland, Russia, Norway, Sweden, and Finland. There are several synonyms for the Arctic Circle, including the Polar Circle, the Circle of Latitude, the North Polar Circle, and the Arctic Circle line. The Arctic Circle is a remote and frozen region, with extreme weather conditions, beautiful landscapes, and wildlife uniquely adapted to survive in these harsh conditions. The Arctic Circle remains an area of great interest to scientists, environmentalists, and adventurers alike.