The 2018 Portugal 2 euro commemorative coin celebrates the 250th anniversary of the Botanical Garden of Ajuda, the oldest botanical garden in the country. Located in Lisbon, this historic site was established in 1768 by the Marquis of Pombal and serves as a significant landmark of Portuguese scientific and horticultural heritage. The national side of the coin features an intricate design inspired by the garden's iconic layout and its diverse plant life, reflecting the Enlightenment-era dedication to natural history and education. By highlighting this institution, the coin commemorates the garden's enduring role in botanical research and its contribution to the cultural landscape of Lisbon. This issue was released in 2018 with a mintage of 520,000 coins.