All public transport in Copenhagen and the rest of the country, operates on a zone system. Lowest fare is a two-zone ticket, which costs 23 kroner for adults (NOK 11.50 for children under the age of sixteen), and can be purchased at ticket offices, vending
machines and bus drivers. Two children under the age of eleven years old can travel free with a paying adult. It allows you to travel around the city in two areas (the area where you purchased the ticket plus a stamped or adjacent area) for one hour. You can
switch freely between all trains, subways and buses in this hour, as long as your trip. Ask locals where help is needed, because the system can be complex for visitors. Night buses run between one and five hours and the fare is the same as during the day.
Although Denmark is the official currency in the European Community esta Swedish krona (7.45 kroner = 1 euro)