What are Singapore main geographical points according to this text? Bullet point please.

Signapore has today:
- Land area of 710 km2 (270 sq miles) and is working towards reclaiming more using sand imports.
- 63 islands, with the main island and Jurong Island, Pulau Tekong, Pulau Ubin and Sentosa, and many smaller ones.
- The highest spot of Singapore is the Bukit Timah Hill at 163.63 meter (537 feet).