There is an extensive network of air, road and train services in Bulgaria. Most tourism sites are accessible by public transport. Buses are common for the urban transport. In addition to them trams and trolley buses are typical for the big cities. A lot of taxi-cabs are to be found in all towns. All accommodation places in Bulgaria have been categorized on the 5-star international system. Privatisation has had a favourable impact and today the country is proud of hotels and restaurants that meet the modern world standard.