4. Japan is an archipelago island nation in South-East Asia, made up of 6,852 islands, with a current total population of 126.8 million people. Of the 6,582 islands, the four largest islands account for the majority of inhabitants, as roughly 97% Japans population live on the four islands. Japan has many major cities, like Osaka, Yokohoma, Nagoya and Sapporo, which are all populated by more than 2 million people. However, Tokyo, Japans Capital City and the largest city in Japan, has an approximate population of 37 million people. To rent a one-bedroom studio apartment in Tokyo, you’re looking at spending in the region of $1,370 a month, or $111 a night in an Airbnb. Eating out varies in price, but as an average for one person, you should be looking at spending around $15.00 for a basic meal and around $6.00 for a beer. Coffee is also pretty reasonable, considering how expensive Tokyo is, at $2.81 a cup.