Explore undiscovered parts of Singapore
We’re not talking about Yio Chu Kang here, people. The Urban Explorers of Singapore is a group of intrepid history buffs who are more Indiana Jones than Professor Can-You-Wiki-That? Rappelling gear in hand, these guys venture into crumbling colonial military encampments, bunkers (pictured is the Seah Im Bunker), tunnel systems and what-have-you (most are in a post-apocalyptic state, so check yourself before you wreck yourself) to document our built heritage in a way the authorities can only dream of. Plus, it's a workout unto itself.
Check out these five secret walking trails.