Getting around Honolulu, and Oahu in general, involves familiarising yourself with local directions. Visitors may be told to go makai (toward the sea) or mauka (toward the mountain); the famous Diamond Head crater is also an important landmark and reference for the east, and the town of Ewa stands in for the west. The main public transport system is simply called The Bus, and serves Honolulu and most of Oahu. The bus network is comprehensive, with about 100 fixed routes and more than 4,000 stops allowing travellers access to all parts of the island. The most popular route runs between Waikiki and Ala Moana Center every 10 minutes. Single tickets are $2.75, or 1-day visitor passes are available for $5.50. The Waikiki Trolley is also a fun way to get around Honolulu, looping around 12 key locations every 40 minutes with commentary by the driver. Taxis are also available, and provide a good means of getting around at night; they are locally regulated so fares are standard across all companies.