Christchurch has an efficient public transport system and is an easy city to navigate. The bus service is reliable and extensive. The most popular is the Orbiter, which circles the outer city in both directions seven days a week. Two of the best transport options for sightseeing are the city's tram, which runs from Cathedral Square, and the City Circuit Bus which connects major attractions in the city. Taxis are readily available and there are also several car rental agencies. Christchurch is fairly flat, so bicycles are another popular mode of transport and many streets have dedicated bike lanes. While public transport is a great way to get around, visitors may find some buses too infrequent for convenient travel and want to hire a car.