REMOVE

1. Palaces
2. HARTMANN, Antoine

WHAT

1. Architecture -- 1800-1900 (2)
2. Architecture -- Luxembour … (2)
3. Bridges, Covered (2)
4. Buildings -- Additions (2)
5. Engineering (2)

WHERE

1. LUXEMBOURG (2)
2. Luxembourg (2)

WHEN

1. 1860 (2)