Pausanias Description of Greece 3.11.2

[2]
  The Lacedaemonians who live in Sparta have a market-place worth seeing; the council-chamber of the senate, and the offices of the ephors, of the guardians of the laws, and of those called the Bidiaeans, are all in the market-place. The senate is the council which has the supreme control of the Lacedaemonian constitution, the other officials form the executive. Both the ephors and the Bidiaeans are five in number; it is customary for the latter to hold competitions for the lads, particularly the one at the place called Platanistas (Plane-tree Grove), while the ephors transact the most serious business, one of them giving his name to the year, just as at Athens this privilege belongs to one of those called the Nine Archons.

[2] The Lacedaemonians who live in Sparta have a marketplace worth seeing; the council-chamber of the senate, and the offices of the ephors, of the guardians of the laws, and of those called the Bidiaeans, are all in the marketplace. The senate is the council which has the supreme control of the Lacedaemonian constitution, the other officials form the executive. Both the ephors and the Bidiaeans are five in number; it is customary for the latter to hold competitions for the boys, particularly the one at the place called Platanistas (Plane tree Grove), while the ephors transact the most serious business, one of them giving his name to the year, just as in Athens this privilege belongs to one of those called the Nine Arkhontes.