The bus is an important means of transport in Europe. There are many countries and cities that are well connected with each other in Europe. Even you can explore the interiors of Europe by bus. The buses in Europe are very much comfortable to travel. For travelling small distances you even do not have to book tickets in advance. But, if you travel long distances then you need to book your tickets before.
There are some of the cities in Europe where you get the chance to explore at free of cost through bus. In London and Amsterdam, you can find Double Decker open air buses which are very good. The buses that connect many cities are at regular intervals so you can choose any of the bus that suits you better. The bus fares are also not very high, so you can easily afford it. By travelling through bus you also get to enjoy the gazing at the wonderful European landscape which is very beautiful and amazing.

