It showcases photographs taken by Mr Tan in 20 countries over the last 20 years. These include panoramic shots of landscapes and cities, with a focus on different peoples and communities who have made their homes in these spaces.
Mr Tan hopes to use the exhibition to raise funds for the poor, disadvantaged and marginalised communities in Singapore.
The public can support the efforts through donations. They can receive a limited-edition exclusive metal print for a $10,000 donation, a premium photo book box set for a $5,000 donation, a special photo book box set for a $1,000 donation, or a postcard pack by giving $50.
All proceeds will go towards 13 partnering charities, including The Straits Times School Pocket Money Fund, Care Corner Singapore, Centre for Fathering, HealthServe and The Turning Point, among others.
For Mr Tan - who was an army brigadier-general and head of the Training and Doctrine Command before entering politics - his interest in photography started when he joined the army.