At Night Safari, electric trams glide past over 130 species, including tigers and elephants, with more docile creatures often passing within centimetres of the trams. Walking trails lead to enclosures inaccessible by tram, though sighting the animals can be a little hit-and-miss. (In truth, many are better seen at neighbouring Singapore Zoo.) If you've got kids in tow, the 20-minute Creatures of the Night show will thrill. Admission is timed on the hour, later slots are less crowded.
You'll need to catch a bus at around 10.45pm to make the last MRT train from Ang Mo Kio at 11.30pm. Otherwise, there are plentiful taxis out the front.