A dreamy, tranquil world is created at the Art Aquarium Exhibition unveiled this past Friday in Tokyo’s historical district Nihonbashi. /VCG Photo

Over 8,000 kinds of ornamental fish are seen swimming in a glass aquarium, including Japanese goldfish. /VCG Photo

In Japanese culture, watching goldfish swimming means “feeling cold” during hot summer days. /VCG Photo

Female visitors explore the surreal view in yukata, a casual summer kimono. /VCG Photo

The exhibition runs throughout the summer until September 24. /VCG Photo