Days 1–2: monuments by day and night, Capitol Hill’s Big 3 and Georgetown, as in the 2-day plan.
Day 3, morning: the Arlington Cemetery small-group tour — the Changing of the Guard and a moving walk through American history.
Day 3, afternoon: green DC: the National Arboretum and its hidden original Capitol columns.
Day 3, evening: the DC by Night moonlit monuments tour — 10+ stops with the memorials lit.
