Singapore has handed four hectares of rare waterfront land next to Marina Barrage to a wellbeing destination that breaks ground today. 

Therme Singapore, opening in 2030, is a billion-dollar concept built not around shopping or spectacle, but around something harder to price: how people rest, connect and recharge.

It's being called Asia's first large-scale social wellbeing development, weaving water, nature, culture and health into a single place.

Michelle Martin sits down with the two men behind it - former National Development Minister and Therme Group Asia Chairman Mah Bow Tan, and Therme Group founder and CEO Robert Hanea.

Together they ask why a city famous for planning decades ahead is now treating wellbeing as infrastructure and whether a billion-dollar development is being designed from ground up to feel like a space that's genuinely open to everyone.