REMOVE

1. Parks -- Luxembourg
2. Fortification -- Luxembourg

WHAT

1. Architecture -- Luxembour … (3)
2. Architecture -- 1700-1800 (2)
3. Art museums -- Luxembourg (2)

WHERE

1. LUXEMBOURG (3)
2. Luxembourg (3)

WHO

1. DESVIGNE, Michel (2)
2. CLEMES, Jim (1)
3. VAUBAN, Sébastien Le Pres … (1)

WHEN

1. 2006 (2)
2. 2009 (1)