Sanctuary of Heracles was a large paved court surrounded by buildings on three sides and with the principal altar in the centre. It wouldn’t have been as separate from the rest of the town as many sanctuaries, and would have been part of the town’s landscape, immediately apparent to the citizens. The 5th century re-buildings were on a much larger scale than the original 6th century rooms.
As you stand at the gate of Silenus, at the entrance to the sanctuary, the temple of Heracles is at the opposite end, at the very North -it would have been on a raised platform. Originally, it was just a single chambered naos, but was later embellished with a wide colonnade on all sides, giving it a square form, slightly different from the traditional rectangular temples, but the colonnade on all sides is very traditionally Greek.
To the west and at the front of this temple was the stepped and porched entrance to the temenos – this was the last addition to the sanctuary, in the 2nd century BC. It opened onto a paved court with the stepped altar in its centre, and a long gallery hall forming the opposite border (along to the right from the entrance at the gate of Silenus).
The South side was occupied by a porticoed building containing official administrative offices for the sanctuary and the banqueting rooms – where the important early summer feast the Heracleia was celebrated.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.