Opened in 1828, the Zoological Society of London’s zoo is the world’s oldest scientific zoo. Its Reptile House, built in the 1920s, features carved reptilian motifs above the entrance and showcases snakes, lizards, frogs and crocodiles in terrariums. The zoo was the first to open a dedicated reptile house in 1849, and the current hall retains an Art Deco feel. Today the building is both an educational exhibit and a piece of heritage, drawing visitors to learn about cold‑blooded species from around the globe. A plaque marks its role in Harry Potter history.