Changi Chapel and Museum
Singapore's memorial to the notorious WW2 Japanese POW camp, the setting of James Clavell's King Rat. The current site is a reconstruction and in a different location, but contains a replica of the original chapel and informative exhibits about the squalid conditions of the prison.
Malay Village
A rather artificial recreation of Malay kampong village life in the heart of Geylang.
Tourist literature usually hawks the restored and, in the daytime, near-empty Arab Street near Bugis, but Geylang Serai is the true home of Singapore's Malay community. Especially during the Islamic month of Ramadan leading up to Hari Raya Puasa Eid ul-Fitr, the entire area lights up in celebration as people eat and shop in the evenings after the sun goes down.
Sengkang LRT
For the transport enthusiast or those interested in seeing the housing in which many Singaporeans live, the light rail is well worth a ride, as it traverses past row upon row of unit blocks. On the West Loop, detour to Jalan Kayu from LRT Thanggam station for some of Singapore's best prata see Eat.