MacRitchie Reservoir & Sentosa Island, Singapore

The long-tailed macaque! Click here for more photos from Singapore.
It's completely free to enter and walk the trails of the MacRitchie Reservoir, and I think the tree-top walk on its own is entirely worth it. Just be prepared for some serious hiking in sweltering conditions - a taxi can take you within 2 km of the walk, but once you enter the bridge it's one-way and the only way out of the reserve is another 5-6 km hike, most of it along a boardwalk. (Except, of course, when the trail becomes swamped in mud or encounters steep rocky inclines. Then you're on your own.) The second half of the hike actually runs along a fancy golf course for a time, so you get to see Singapore's finest citizens out practicing their drives, looking completely cool and comfortable, while you are swimming in sweat and limping from blisters. It's a fun comparison, I assure you.

The view from Sentosa Island
Upon stepping off the bus we did indeed find ourselves in one huge theme park, essentially - all the careful landscaping and artfully designed walks strongly reminded me of Atlantis in the Bahamas. Or perhaps even Disney World, as the island even has a ride - the luge! It is quite silly but ridiculously fun - for $11SNG you take a ski lift over the island then ride a low wheeled cart down a course, speeding or gliding as you like. Monica merrily swerved all over the course, cackling all the way. I was a more sedate driver.
Our theme-park ride accomplished we headed for the beach, where I was rather disappointed. I know Singapore is a massive hub for shipping traffic, of course, but I had no idea their resort beaches would essentially look onto a major shipping lane. They'd built mini-islands facing the beaches (which were created with sand imported from Indonesia, E tells me) in order to improve the view, but they couldn't hide the fact that some freighters were anchored just offshore. It was not encouraging me to swim, and the cloudy water speckled with debris didn't help. So Monica swam while I lounged on the beach and read a book, and we were both happy. Afterward we watched the sunset over the shipping channel choked with vessels - and with all the bobbing lights, it was quite the beautiful sight.