Istana Open House on 4 November 2021, apply for tickets in advance / Lobang / By Singapore Lobang King / November 1, 2021 Lobang: http://singpromos.com/places-of-interest/istana-open-house-on-4-november-2021-apply-for-tickets-in-advance-250174/ Enjoy the Istana’s outdoor spaces and gardens.. Read more at SINGPROMOS.COM