The Nilgiris district is in the southern Indian state of Tamil Nadu. Nilgiri is the name given to a range of mountains spread across the borders among the states of Tamil Nadu, Karnataka and Kerala.

Niseko is a town located in Shiribeshi Subprefecture, Hokkaido, Japan. To Japanese people, Niseko principally refers to a mountain range and a municipal area.

Highland is a council area in the Scottish Highlands and is the largest local government area in the United Kingdom. It was the 7th most populous council area in Scotland at the 2011 census. It shares borders with the council areas of Aberdeenshire.

Norway is a Scandinavian country encompassing mountains, glaciers and deep coastal fjords. Oslo, the capital, is a city of green spaces and museums. Preserved 9th-century Viking ships are displayed at Oslo’s Viking Ship Museum.

Nevado Ojos del Salado is an active stratovolcano in the Andes on the Argentina–Chile border and the highest active volcano in the world at 6,893 m.

Nevado Ojos del Salado is an active stratovolcano in the Andes on the Argentina–Chile border and the highest active volcano in the world at 6,893 m.

Ooty (short for Udhagamandalam) is a resort town in the Western Ghats mountains, in southern India's Tamil Nadu state. Founded as a British Raj summer resort, it retains a working steam railway line.

Ordesa y Monte Perdido National Park is an IUCN Category II National Park situated in the Pyrenees

Osorno is a city in south-central Chile, on the Rahue River. The 18th-century Reina Luisa Fort stands beside the river. The Museo Histórico Municipal has exhibits on the Mapuche culture and the 19th-century German settlers who built nearby mansions.

Oukaimden is a small town and rural commune in Al Haouz Province of the Marrakesh-Tensift-El Haouz region of Morocco. At the time of the 2004 census, the commune had a total population of 4440 people living in 655 households.