Road conditions tend to be poor in the region surrounding Manaus, which limits the usefulness of buses for travelling beyond the city limits, but there is a fairly comprehensive bus network. Taxis are plentiful in the city, but can prove expensive, with fares within the city around BRL 25. Manaus is a popular starting point for river tours, and a number of nearby towns and cities, as well as tourist attractions, can be most comfortably reached by boat. Most major tourist attractions in Manaus are within walking distance and hiring a car is usually unnecessary.