Butterfly Garden and Butterfly House

Some useful links to study the topics above:

http://www.thebutterflysite.com/gardening.shtml

http://www.extension.umn.edu/garden/yard-garden/landscaping/butterfly-gardening/creating-a-butterfly-garden

http://www.butterflyhouse.co.uk

http://www.lancaster.gov.uk/parks-and-open-spaces/williamson-park/butterfly-house