Nevado Sajama queñua woodlands: the highest-altitude forest

Possible world’s highest altitude forests. These sparse stands of low queñua (Polylepis tarapacana) trees grow up to the height of 5 000 m.

The southernmost forest at Cape Horn

World’s southernmost forest – a group of low, windswept trees: Nothofagus antarctica, Nothofagus betuloides and Drimys winteri.

Ancient Bristlecone Pine Forest

Grove of Great Basin Bristlecone Pine (Pinus longaeva), contains the oldest known individual trees in the world, more than 4,750 years old.

Goualougo Triangle – the realm of chimpanzees

Large tract of pristine lowland rainforest, dubbed "The Last Eden" or "The Last Place on Earth" due to its virgin wildlife. Local chimpanzees, as well as other animals, have never met humans – it seems that humans have never lived here.

Giant Forest, California

Unique forest with stands of giant sequoia trees (Sequoiadendron giganteum) – the largest trees in the world. This is the easiest to access sequoia grove but also contains the largest trees – five of the ten largest trees on Earth are located in this grove. Area – 7.6 km². In California are located several more notable groves of these giant trees.

Yasuni Forest

Possibly the most biodiverse area in the world. In this rainforest, the diversity of reptiles, amphibians, freshwater fishes, birds, mammals, and vascular plants (with 2,700 – 4,000 species of plants per hectare) reaches their maximum for Western Hemisphere and often – world. Uncontacted tribes live in the forest. Endangered and affected by oil extraction.

Forest on Robinson Crusoe Island

Temperate forest with a unique level of endemism – out of 211 local plant species 132 are endemic – e.g. met only on this island. The dense forest is formed from trees that are not met anywhere else. Hundreds of endemic species of insects.

Grand Bois, Amsterdam Island

The only remnant of the dense forest of Phylica arborea – an subantarctic tree. This forest covers 8 ha, earlier, before the human inflicted forest fires it covered large part of the island.

Christmas Island crab forest

The forest of Christmas Island is unique in the world due to dominant species – some 50 – 100 million red crabs (Gecarcoidea natalis) – clearing the forest floor of leaves and other organic matter. These crabs are endemic to Christmas Island. Once per year they migrate to the sea to lay their eggs, on the way blocking the roads and paths.

Lukunsky Grove

The northernmost grove of trees in the world. It consists of low stands of Dahurian larch (Larix gmelinii (Rupr.) Rupr.).