Map data © OpenStreetMap contributors (ODbL).

標高: 国土地理院　地理院タイル（標高タイル（基盤地図情報数値標高モデル））を加工して作成

Locations: Wikidata (CC0). Models are symbolic, not to scale.

Maps in “Where is Tokyo?”: Natural Earth (public domain).

Wave at sea: “Under the Wave off Kanagawa” by Katsushika Hokusai, The Met Open Access (CC0).

Source: Japan Meteorological Agency website