Around three quarters of Japan is mountain and forest, which pushes almost everyone onto the eastern coastal plains and makes the country far narrower in practice than 377,975 km2 suggests. Forty-seven prefectures, eight traditional regions and more than 14,000 smaller islands, and yet a first visit usually runs along a single rail corridor with Tokyo at one end and Kyoto and Osaka at the other. Tokyo is the capital and largest city of a country of almost 123 million people. Hokkaido in the north and Okinawa in the south are different climates rather than day trips, and both need their own week.
Checked 2026-08-25