Singapore consists of 63 islands, including the main island, Pulau Ujong. There are two man-made connections to Johor, Malaysia: the Johor–Singapore Causeway in the north and the Tuas Second Link in the west. Jurong Island, Pulau Tekong, Pulau Ubin and Sentosa are the largest of Singapore's smaller islands. The highest natural point is Bukit Timah Hill at 163.63 m (537 ft).
Ongoing land reclamation projects have increased Singapore's land area from 581.5 km2 (224.5 sq mi) in the 1960s to 719.1 km2 (277.6 sq mi) in 2015, an increase of some 23% (130 km2). The country is projected to grow by another 100 km2 (40 sq mi) by 2030. Some projects involve merging smaller islands through land reclamation to form larger, more functional islands, as has been done with Jurong Island.