The Western North Carolina Nature Center has a lovely small seasonal butterfly house that I hadn't visited before. Displaying native butterflies (monarchs, gulf fritillaries, painted ladies, buckeyes, sulfurs, giant swallowtails, and others), it's a simple, but very effective display.
A hoop house, covered with black mesh, entering and exiting through double-screen doors is the basic set-up: inexpensive and nice. Raised beds support a variety of nectar plants and many other donated plants creating a nice border mix.
This monarch butterfly benefited from a purple coneflower inflorescence.
An outdoor butterfly garden bed completes the display. Great fun, indeed.
We'll be breaking ground in a couple of weeks for a new Butterfly Garden installation at the Botanical Garden where I work. We're excited about adding lots of host plants for butterfly caterpillars in addition to the nectar plants!