Belgian artist Wim Delvoye, created a series of Gothic works, Chapel. Some very unusual stained-glass windows and sculptural works made of steel, lead, glass and actual x-rays. Delvoye took x-rays of two friends performing sexual acts, then combined the x-rays with stained glass to fill the windows of a gothic-style chapel. Some of the windows simply look as though they are made of an abstract design, when upon closer inspection, one can see teeth, intestines, skulls and other anatomical features.