Trabzon Aquarium is a unique and innovative marine attraction located in Ortahisar, Trabzon, on Turkey's Black Sea coast. Proudly recognized as the first aquarium in the world built entirely inside a tunnel, the facility features a remarkable 300-meter walkway passing through 61 specially designed tanks, creating a breathtaking immersive underwater experience. The aquarium is home to more than 5,000 living creatures representing 80 species, ranging from fish to reptiles, all displayed in themed aquatic environments. Highlights include feeding shows held on Tuesdays, Thursdays, Saturdays, and Sundays at 3:30 PM, as well as green screen photo opportunities and a gift shop. Open daily from 10:00 AM to 7:00 PM, children under three enter free, and group discounts are available, making Trabzon Aquarium a must-visit educational and family attraction in the region.