The Butterfly Garden, Grevenmacher

http://www.visitluxembourg.com/en/place/misc/paiperleksgaart-greiwemaacher

A butterfly from the Garden in Grevenmacher
The Butterfly Garden is the ideal place for lovers of nature and its beauties. Located in the wine town of Grevenmacher, you can take a walk in the vast tropical garden and admire hundreds of exotic butterflies. With a constant temperature of 27°C and humidity of 70%, the tropical garden is a paradise-like oasis on the shores of the Moselle for butterflies from all over the world.