The architect who co-designed Steilneset Memorial was born on what date?
Steilneset Memorial:  The memorial was designed by artist Louise Bourgeois and architect Peter Zumthor and was opened in 2011. Peter Zumthor: Peter Zumthor (born 26 April 1943) is a Swiss architect whose work is frequently described as uncompromising and minimalist.
26 April 1943