Hanga Roa [1] has an abundance of operators who offer tours around the island. Some have offices in Santiago where excursions can be arranged in advance, but this is more expensive and rarely necessary except for those seeking specific hotels or on a very compressed time schedule.
Partly because so many mainlanders have moved to the island and offered their services as guides, whether or not they have any formal qualifications, locals have organized an Asociación de Guías de Turismo de Isla de Pascua (Easter Island Tourist Guides Association) to regulate the industry. While it may not be quite perfect, it’s a good start toward establishing and maintaining standards.
Except for Ahu Tautira and Ahu Tahai (for both see Parque Nacional Rapa Nui [6]), Ahu Vai Uri, and Ahu Akapu, Hanga Roa [1] proper has only a handful of typical tourist sights. Its vigorous village life is a very real if intangible asset, though; one of its foci is Avenida Atamu Tekena.
At the corner of Atamu Tekena and Te Pito Te Henua, Plaza Policarpo Toro contains side-by-side busts of its namesake naval officer, who claimed the island for Chile in 1888, and of Atamu Tekena, who ostensibly ceded Rapanui sovereignty to the Chileans.
On a rise at the eastern end of Te Pito Te Henua, the Iglesia Parroquial de la Santa Cruz (Tu’u Koihu s/n) is the island’s Catholic church and a focus of the colorful Easter Sunday services, when the priest arrives and departs on horseback. Its airy interior is decorated with spectacular carved wooden statues, a syncretic vision of Christianity and indigenous spirituality.
At the north end of town, overlooking Bahía Cook, artificial flowers festoon headstones at Cementerio Hanga Roa, the mostly Polynesian cemetery. At Eastertime, the cemetery is particularly vivid with decorations.
Links:
[1] http://www.moon.com/destinations/chile/chilean-pacific-islands/rapa-nui-easter-island/hanga-roa
[2] http://www.akuakuturismo.cl
[3] http://www.kiakoetour.cl
[4] http://www.mahinatur.cl
[5] http://www.rapanuitravel.com
[6] http://www.moon.com/destinations/chile/chilean-pacific-islands/rapa-nui-easter-island/parque-nacional-rapa-nui