Lake Toba(Danau Toba) is the largest volcanic lake in the world and is in Sumatra, Indonesia. Samosir island within the lake is an island within the island of Sumatra. Lake Toba is an immense volcanic lake covering an area of 1,707 km² (1,000 km² bigger than Singapore) with an island in its centre. Formed by a gigantic volcanic eruption some 70,000 years ago, it is probably the largest resurgent caldera on Earth. Some studies say it might have been associated with causing previous ice age/climate change.
The island in the middle - Pulau Samosir - was joined to the caldera wall by a narrow isthmus, which was cut through to enable boats to pass; a road bridge crosses the cutting. Samosir island is the cultural centre of the Batak tribe who are now mostly Christians. The Batak Culture has a lot of Rituals and Parties.
Berastagi (Dutch: Brastagi), meaning "rice store", is a town and district of Karo Regency situated on a crossroads on the main route linking the Karo highlands of Northern Sumatra to the coastal city of Medan. The village rose to significance when Dutch settlers in Sumatra opened a boarding school there in the 1920s. Located in the Barisan Mountains area, the mean annual temperature of the district is 18 °C (64 °F).The main economic activities in Berastagi, centre on the colourful fruit and vegetable market and on tourism. Berastagi is famous for its passion fruit. The main attractions of the town are the two active volcanoes; Mount Sibayak, with its hot springs, and Mount Sinabung.
Mt. Sibayak is a small stratovolcano overlooking the town of Berastagi in northern Sumatra, Indonesia. Although its last eruption was more than a century ago, geothermal activity in the form of steam vents and hot springs remains high on and around the volcano. Elevation: 2,212 m (7,257 ft).
Mount Sinabung is a Pleistocene-to-Holocene stratovolcano of andesite and dacite in the Karo plateau of Karo Regency, North Sumatra, Indonesia, 40 kilometres (25 mi) from the Lake Toba supervolcano. Elevation: 2,460 m (8,070 ft).
The Sipisopiso is a plunge waterfall in the Batak highlands of Sumatra, Indonesia. It is formed by a small underground river of the Karo plateau that hurls itself from a cave in the side of the lake Toba caldera some 120 meters (360 feet) down to lake level. This fact earns it the title for the highest waterfall in Indonesia. Sipisopiso is a well-known tourist attraction and a nearby vantage point offers great vistas of the fall and the lake.
Bukit Lawang is a small village situated 90 kilometers northwest of Medan, the capital city of North Sumatra, Indonesia. Bukit Lawang is most famous for being a site to easily spot semi-wild orangutans near convenient tourism facilities. Bukit Lawang is situated at the eastern side of Gunung Leuser National Park.
Medan is the capital of North Sumatra province in Indonesia. Located along the northeastern coast of Sumatra island, Medan is the fourth biggest city by population in Indonesia, behind Jakarta, Surabaya and Bandung. Medan is the gateway to the western part of Indonesia, accessible via the Port of Belawan and Kuala Namu International Airport. Because of its multiculturality, Medan has wide variety of cuisine which are categorized as local, western, east and southern Asian and Middle Eastern cuisine, the city hosts a lot of cafes, restaurants, food centre and also street vendors with a varies prices. There are several historic places such as Maimoon Palace built in years 1887–1891 and The Great Mosque of Medan built in 1906.