Lajos Juhász Greenhouse and Roof Garden (Juhász Lajos Növényház és Tetőkert), Leányka campus

The botanical garden of Eszterházy Károly University was founded in 1967 on the initiative of János Suba and colleagues from the botany department, on the edge of Eger, on former vineyards and orchards; its first purpose was to present the vegetation of the northern Hungarian mountains. After 1980, for lack of funds, its development fell back, and in 2010 the city council declared it a protected area of local importance. Two years later, in 2012, a new greenhouse, the Lajos Juhász Greenhouse and Roof Garden, was built on top of building 'G' of the Leányka campus (Táborská, 2023). The open-air garden was completely rebuilt in 2015.

A Hungarian tourism portal announces the opening of the greenhouse to visitors and says the tropical and succulent plants found their permanent home in the roof part of building G. The 2023 study also notes that it is not in the botanical garden: about ten minutes' walk separate the two sites.

The greenhouse sits at the top of building 'G' of the Leányka campus, one of the university buildings of the site (C, D, E, G and Delta appear on OpenStreetMap). Its Hungarian name combines 'Növényház', the greenhouse, and 'Tetőkert', the roof garden.

A photograph published by the university on its botanical garden page shows a long, narrow space with a sloping, partly glazed roof and a glazed side wall, culture benches running along the glass and a tiled floor. Potted cacti are lined up on a shelf in front of a glazed wall that looks out onto a neighbouring building.

The greenhouse is home to numerous tropical, subtropical and succulent plants. A tourism portal names tillandsias, many of them brought back from tropical journeys by Professor Tamás Pócs, a Cuban species of Cycas and orchids, alongside the most common cacti and houseplants.

The 2023 study points out that there is not yet a database of greenhouse plants, whereas the open-air garden keeps a register of 162 tree species and 550 herbaceous species, 104 of them protected in Hungary.

The greenhouse is visited on the Leányka campus, not at the botanical garden. According to the garden's official page, it is open all year on working days in the presence of the gardener; other times and groups require prior registration, and admission is free. A tourism portal instead gives a more limited opening with compulsory registration, so it is best to telephone before going, the number being on the official page.

The botanical garden, on Almagyar hill ten minutes' walk away, opens from April to September on working days; it presents mainly the flora of the Carpathian Basin, in particular that of the neighbouring Bükk and Mátra mountains. The two sites combine naturally.