Portal:Byzantine Empire/DYK/7

... that Isidore of Miletus was the architect who, together with Anthemius of Tralles, designed the cathedral of Hagia Sophia in Constantinople?
... that the Byzantine emperor Nikephoros II allegedly insisted for taxes to be paid in the full-weight histamenon gold coin, but only paid back in the lighter tetarteron?
... that the Byzantine writer and diplomat Leo Choirosphaktes was imprisoned on his first embassy to Tsar Symeon of Bulgaria, but continued negotiations from his cell?