Fort Siloso guarded Keppel Harbour from invasion in the 1880s. It's one of three forts built on Sentosa, and it later became a military camp in World War II. The buildings have been outfitted to resemble a barracks, kitchen, laundry, and military offices as they looked back in the day. In places, you can explore the underground tunnels and ammunition holds, but they're not as extensive as you would hope they'd be.

Copyright: Excerpted from Frommer's Singapore & Malaysia, 6th Edition, (c) 2008, Wiley Publishing, Inc.

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