Lake Toba is an immense volcanic lake covering an area of 1707 sq km (bigger than Singapore) with an island in the center.
Is one of Indonesia's regions and the 6th largest island in the world.
Bintan is one of the Riau Islands, 45 minutes from Singapore by ferry, full of expensive resorts.
An archipelago of over 3,000 islands, just 40 minutes from Singapore.
The jewel of Riau Islands in Indonesia, Lagoi beach is lined with coconut trees and has amazing white sand.