Eifalia Butterfly Garden (Schmetterlingsgarten, tropical butterfly house)

Eifalia is a butterfly garden in Ahrhütte, a village in the municipality of Blankenheim in the Eifel. According to the Wikipedia article on the village, which cites the operator's website and an August 2018 article in Bonn's General-Anzeiger, the garden has existed since 2016; the following year it is said to have counted 15,000 visitors, and the article states that about 400 butterflies can be seen in the tropical greenhouse, alongside native species outdoors.

The place belongs to a village that grew out of the iron industry. Ahrhütte is first mentioned in 1511, in a revenue register of the Dukes of Arenberg, and takes its name from the ironworks they controlled until the French invasion of 1794; the last blast furnace went out in 1861. Lime burning, documented from 1859, continued until 1969; its buildings were demolished in 1975 and the NRW-Stiftung foundation acquired the land in 1982. The street Am Hammerwerk, where the garden stands, is among the street names that Wikipedia says recall this vanished industry.

According to the blog Eifel mit Kind (article of 2020, updated in October 2025), the garden was again renovated extensively after the floods of July 2021, and a large café area with a play corner was added; the Kinderland play area has been open since June 2023. Since 2026 the garden has also presented itself as an out-of-school education venue, with spring and autumn programmes for nurseries and primary schools.

Eifalia's Tropenhaus is a single-storey greenhouse whose area the Eifel tourist board gives as about 240 m², describing it as flooded with light, heated to between 28 and 30 °C and very humid, with a fog machine adding to the tropical atmosphere. Free photographs published on Wikimedia Commons in November 2022 show a long, narrow building whose vertical walls and roof slopes alike are made of translucent multi-cell panels fixed to an aluminium frame; at the far end the roof breaks into several successive gables.

Inside, a waterfall drops from a three-metre stone structure into a winding stream about seven metres long. The official website describes two halls designed for tropical flora and fauna: a rainforest house (Regenwaldhaus) and a hall for sun-loving butterflies. It also distinguishes a "Haus für einheimische Schmetterlinge", devoted to native species. The Tropenhaus and that house are accessible to wheelchairs and walkers.

The official website presents the Regenwaldhaus as the place where many blue morphos and butterflies known as "Bananenfalter" fly, the latter mostly active at dusk; children are invited to look for caterpillars there. In the other hall, devoted to sun-loving butterflies, it announces up to 40 species. The Eifel tourist board mentions about twenty species, including the blue morpho from Costa Rica, Asian Papilio, owl butterflies and the Canary Islands monarch, and speaks of up to 500 butterflies. A visitor's photo gallery names the genera Heliconius, Papilio, Morpho and Siproeta, as well as Attacus atlas, Euploea core and Parthenos sylvia. Artificial flowers soaked in nectar, which visitors may carry around, attract the butterflies.

The garden also houses lizards, tortoises and a few bird species, as well as an iguana and button quail according to the Eifel mit Kind blog. Outdoors, a botanical butterfly garden, open every year from 1 May, offers an accessible path about native butterflies and a riddle game.

Eifalia stands in Ahrhütte on the Ahr, amid the juniper heaths that, according to the official website, characterise the Eifel. The season runs from late March to early November and the outdoor botanical garden opens only from 1 May, so May to September gives the fullest visit. In late summer and early autumn, dusk evenings are announced for 2026 (a crime-fiction reading on 19 September and the "dance of the Bananenfalter" on 25 September and 3 October), allowing visitors to see these crepuscular butterflies in flight.

Dogs are not allowed in the houses but may be brought on a lead outdoors. Photography is encouraged, although tripods are not allowed on Sundays. Among nearby excursions, the official website recommends the Eifel Museum in Blankenheim, the Lampertstal hiking area, the Nettersheim nature centre, the Nohn waterfall, the Kommern open-air museum and Steinfeld Abbey.