Also known as Hakone Lake, this scenic crater lake offers spectacular views of Mount Fuji. A great way how to enjoy all its sights is cruising it on a boat or ferry. The surrounding area is a popular hiking destination with many trails, as well as historical sights, hot springs, and other natural gems.
Note that the beautiful views get frequently spoiled by clouds; it is recommended to visit in colder seasons for better visibility.
Official Website http://www.hakone-geopark.jp/area-guide/007ashinoko.html
Coordinates 35°12'37.88" N 139°0'20.911" E