Madeira all points of interest on the islands. Funchal has an extensive public transportation system. Bus companies, including Horários do Funchal which has been operating for over a hundred years, have regularly scheduled routes to all points of interest on the island. Folklore music in Madeira is widespread and mainly uses local musical instruments such as the machete, rajao, brinquinho and cavaquinho, which are used in traditional folkloric dances like the "bailinho da Madeira". Emigrants from Madeira also influenced the creation of new musical instruments. In the 1880s, the ukulele was created, based on two small guitar-like instruments of Madeiran origin,
Madeira or East Indies. To prevent the wine from spoiling, neutral grape spirits were added. However, wine producers of Madeira discovered, when an unsold shipment of wine returned to the islands after a round trip, that the flavour of the wine had been transformed by exposure to heat and movement. Today, Madeira is noted for its unique winemaking process which involves heating the wine and deliberately exposing the wine to some levels of oxidation. Most countries limit the use of the term "Madeira" to those wines that come from the Madeira Islands, to which the European Union grants Protected Designation of