Historical clue formulations

• Ancient Greek colonnade — 2018-06-16
• Site of Zeno's teaching — 2018-01-17
• Greek colonnade — 2016-05-12
• Athenian colonnade — 2016-04-11
• Old colonnade — 2015-10-11
• Greek portico — 2015-09-27
• Greek walkway — 2014-12-10
• Ancient Greek colonnade — 2014-07-22
• Ancient walkway — 2014-07-06
• Covered Greek walkway — 2014-06-09
• Spartan gathering place — 2013-11-16
• Greek colonnade — 2012-10-31
• Classic covered walk — 2012-09-21
• Old philosophers' place — 2012-08-28
• Spartan walkway — 2011-11-06
• Spartan walkway — 2011-02-20
• Athenian porch — 2010-10-31
• Feature of some Greek buildings — 2010-07-25
• Greek portico — 2010-04-19
• Site of Zeno's teaching — 2010-03-30
• Greek gathering spot — 2010-03-02
• ___ of Attalos (Greek museum site) — 2010-01-03
• Ancient Greek portico — 2009-12-09
• Covered walkway — 2009-08-30
• Ancient walkway — 2008-12-26
• Ancient Greek walkway — 2008-05-13
• Old marketplace surrounder — 2008-03-01
• Ancient Greek colonnade — 2007-10-16
• Feature of some classical architecture — 2007-08-18
• Covered walkway — 2006-03-07
• Feature of old Greek architecture — 2005-06-24
• Classical lecture site — 2005-05-28
• Portico in Greek architecture — 2005-03-28
• Ancient gathering place — 2004-12-04
• Ancient sheltered promenade — 2004-11-19
• Greek portico — 2004-11-07
• Old gathering place — 2004-07-17
• Portico in Athens — 2004-05-25
• Portico — 2004-04-22
• Greek promenade — 2003-08-11
• Classical meeting place — 2003-05-04
• Ancient colonnade — 2002-07-31
• Athenian hub — 2002-06-27
• Ancient portico — 2002-04-15
• Ancient temple attachment — 2001-12-13
• Ancient gathering spot — 2001-11-18
• Ancient colonnade — 2001-01-31
• Portico — 2000-05-04
• Greek promenade — 1999-11-26
• Where Zeno of Citium lectured — 1999-04-03