Vegreville egg
The Vegreville egg is a giant sculpture of a pysanka, a Ukrainian-style Easter egg. The work by Paul Maxum Sembaliuk is built of an intricate set of two-dimensional anodized aluminum tiles in the shape of congruent equilateral triangles and star-shaped hexagons, fashioned over an aluminum framework. The egg is long and three and a half stories high, weighing in at . It is the second largest pysanka in the world. The biggest one was built in Kolomyia, Ukraine in 2000.
Dvoyanka
Similar instruments are found in Albania (cyla-diare), Macedonia (piska), Greece (disavli), Romania (fluierul gemanat), and Serbia (dvojnice) in one build or another. One difference, however, is that where the Bulgarian dvoyanka is rectangular in shape, where the two tubes are bored straight through a single block of wood and the material in between remains intact, in Albania and Serbia the wood between the tubes may be cut away so that they resemble two separate "legs" (the instrument then resembles an upside-down Y; see other instruments in this case).