I read with fascination and a keen interest about how the locations of 20 former istanas have been found in Singapore (Singapore's lost palaces, Jan 14).

Lest they be lost again through the passage of time, I urge the National Heritage Board to erect pictorial boards or even scale models of these former istanas at the places where they used to be.

Grassroots organisations and heritage interest groups can then develop new walking trails or include these old palace sites in their existing ones.