National Botanic Gardens, Dublin (must see)

Along the southern bank of the River Tolka in Glasnevin, you'll find the National Botanic Gardens, a green haven where even rainy days can't dampen the spirits thanks to the magnificent Victorian glasshouses – perfect for when Mother Nature decides to play tricks on us. Established between 1795 and 1825 with funding from the Irish parliament, these gardens have quite the bragging rights; in 1844, they became the world's first to successfully cultivate orchids from seed, and the following year, they were the first to detect the potato blight that precipitated the Great Famine. Today, with around 20,000 species and varieties mingling about, including some rare fern-like trees that look like they just stepped out of the Jurassic era, there's plenty to keep you entertained.

Access to the gardens is free, offering visitors the chance to explore highlights such as the picturesque rose garden, extensive collections of heather and rhododendrons, the enchanting Chinese shrubbery, and the expansive arboretum. Tropical glasshouses have been revamped and now double as Instagram-worthy architectural wonders, reflecting the ever-changing Irish skies above. Additionally, visitors can delve into history with a tour of the recreated Viking home site nearby, admire artwork scattered throughout, and indulge in refreshments at the café and tea room. Ample walking paths provide serene avenues for leisurely strolls.

Tips:
Note that Sundays often see an influx of families, but the expansive grounds offer plenty of nooks and crannies to squirrel away in. Moreover, a visit to the adjacent historic Glasnevin Cemetery is recommended for those interested in delving further into the area's heritage.