As malls in other Southeast Asian cities are evolving into vibrant lifestyle destinations, Singapore's retail scene is grappling with space constraints, cautious landlords and shifting shopper behaviour, prompting a rethink of what makes a mall worth visiting. On a recent trip to Bangkok, Ms Yinn Ong, a Singaporean, was captivated by something she would not expect to see in a mall – an indoor floating market. It sat within IconSiam, a riverside megamall boasting more than 500,000 sq m of retail