Czech Republic , at 50°5′13.23″N 14°25′15.30″E ﻿ / ﻿ 50.0870083°N 14.420917°E ﻿ / 50.0870083; 14.420917 . The Orloj is mounted on the southern wall of Old Town City Hall in the Old Town Square and is a popular tourist attraction. The Orloj is composed of three main components: the astronomical dial, representing