Lake Tisza Ecocentre, Environmental education center in Poroszló, Hungary.

Lake Tisza Ecocentre is a visitor centre in Poroszló whose main building, designed by Ybl Miklós Prize-winning architect Kertai László, covers 2,600 m² over four levels and resembles a bird in flight. Its basement holds a 735,000-litre freshwater aquarium system with over 50 Hungarian fish species, including the 1.5–2 m viza (beluga sturgeon) seen from a glass tunnel.

The facility opened in April 2012 as part of a regional effort to strengthen environmental awareness and sustainable tourism around Lake Tisza. The project was created to protect the lake's delicate aquatic environment and share knowledge about its ecosystems.

The centre's name refers to the Tisza Lake, and its exhibits tie into local life: a boardwalk leads to the municipal tájház, a traditional house where objects and trades linked to the lake are displayed. Nearby, a harbour on the lake shore runs regular small-boat trips to the Water Promenade and rents GPS-navigated boats for exploring the lake's channels and islands.

The main building has four levels: the aquarium system is on the basement level, amphibians and reptiles on the ground floor, and the microscope room, Earth-info room and children's play room on the first floor. A 50-seat 3D cinema and a 100-seat conference hall are also inside. A boat harbour across the dam offers regular small-boat trips to the Water Promenade and GPS-navigated boats for the lake's channels and islands.

The tanks are designed to recreate different water depths and temperatures, allowing the center to display fish species that naturally live alongside each other in the lake. This technical approach makes it possible to show how these species interact and share their natural habitats.