Long Thanh Gallery Address: 126 Ð Hoang Van Thu, Cai River area Located in the bustling heart of the city, Long Thanh Gallery showcases the work of Vietnam's most prominent photographer. Long Thanh developed his first photo in 1964 and continues to shoot extraordinary black-and-white images of everyday Vietnamese moments. The powerful images capture the heart and soul of Vietnam. Among his most compelling works, Under the Rain is a perfectly timed shot of two young girls caught in a sudden downpour, with a mysterious beam of sunlight streaming down on them.