| 2026-07-04 | Membership categories |
| 2026-04-19 | Ranks |
| 2025-12-10 | Several things in a pagoda |
| 2025-09-15 | Echelons |
| 2025-03-23 | Wedding cake features |
| 2024-09-23 | Stadium levels |
| 2024-02-18 | Arena seating sections |
| 2022-02-27 | Ranks |
| 2020-09-20 | Parts of ziggurats |
| 2019-12-26 | Levels |
| 2019-12-15 | Levels |
| 2019-10-01 | Echelons |
| 2019-07-11 | Strata |
| 2019-05-09 | Rungs |
| 2018-05-30 | Features of many wedding cakes |
| 2017-06-17 | Rows |
| 2015-10-18 | Levels |
| 2014-01-21 | Wedding cake parts |
| 2013-11-14 | Levels |
| 2013-08-22 | Many opera houses have them |
| 2013-08-11 | Levels |
| 2012-03-25 | Floors |
| 2011-10-26 | Arena sections |
| 2011-06-26 | Ranks |
| 2011-03-26 | Hillside landscaping effects |
| 2011-03-13 | Ziggurat features |
| 2010-01-26 | Wedding cake layers |
| 2009-09-17 | Ziggurat features |
| 2009-03-26 | Levels |
| 2009-03-08 | Seating sections |
| 2007-04-03 | Layers |
| 2005-12-26 | Stadium levels |
| 2005-03-01 | Cake sections |
| 2004-10-10 | Seating sections |
| 2004-08-15 | Levels |
| 2004-05-09 | Levels |
| 2004-02-08 | Ranks |
| 2003-02-07 | Arena arrangement |
| 1999-10-24 | Stadium sections |
| 1999-07-26 | Levels |
| 1999-06-12 | Arena parts |
| 1999-03-13 | Echelons |
| 1998-01-11 | La Scala features |
| 1996-11-03 | Seat groupings |
| 1996-10-07 | Wedding cake layers |
| 1996-06-30 | Stadium divisions |
| 1995-06-23 | Ranks |
| 1995-06-12 | Rows |