Historical clue formulations

• War of 1812 treaty locale — 2026-04-25
• Treaty of ___, official close to the War of 1812 — 2026-04-12
• War of 1812 treaty site — 2021-06-02
• 1814's Treaty of ___ — 2020-01-04
• Treaty of ___, pact ending the War of 1812 — 2014-07-14
• Belgian treaty city — 2014-03-24
• War of 1812 treaty site — 2010-05-09
• Belgian treaty site — 2008-10-19
• Belgian treaty city — 2008-09-30
• Capital of East Flanders — 2008-02-17
• Capital of East Flanders — 2004-12-19
• "The ___ Altarpiece," a painting by ... — 2003-01-10
• War of 1812 treaty site — 2001-06-25