If you fly right on over to Holland/ Belgium
You could find Castles if you are a descendant of the Van Valkenburg you would be thrilled to go and see where these ancestors came from.
My Van Valkenburg is from Dorothy Hainer daughter of Albert Hainer & Catherine Vollick. Dorothy was born in Ontario. She married David Putman in Niagara, Ontario

Present day Ariel view of Castle Van Valkenburg
It's so fun to find out my Family History!!!
'
"How the Castle
Came to Ruin
The story starts in the year 1648, when Holland became an
independent nation, after being a Spanish colony. The
southern provincies (now Belgium) however, remained
Spanish soil. The borders were unclear which resulted
into many struggles and battles.
The Spanish presence was weak (too far away from the homeland),
so there was pressure from Holland and from France to conquer
those provinces.
The French king Louis XIV was successful as
he pushed north and conquered Valkenburg. Maastricht
(the province capital) remained a strong Dutch
bastion, but now under threat from the Valkenburg
fortress.
Stadtholder Willem III (in Maastricht) sent "commandos" to
Valkenburg and captured the city for a special mission:
On December 6th, 1672, the castle was blown up with
gunpowder and explosives. Willem III decided not to
conquer the town and to use the castle as a fortress,
but simply to destroy and leave. This was effective,
because the French were no now longer interested.
With Valkenburg eliminated as a stronghold the town became a quiet
village with little strategic importance for centuries to come.
Stadtholder Willem III later went on to become King William III of England."
from http://www.navvf.org/
"Valkenburg

There are actually three Valkenburg towns in the Netherlands:
Valkenburg aan de Geul (Valkenburg on the Geul River),
Oud Valkenburg (Old Valkenburg), both in the Limburg Province in the southeast of the Netherlands, near Maastricht.
See
vvv South Limburg and
http://www.visitvalkenburg.nl (in Dutch)
There is also
Valkenburg, Zuid-Holland (Valkenburg South
Holland) on the Rijn river not too far from Leiden, which is noted for
having a big Royal Navy - NATO airbase and which had a large
archeaological dig of ancient Roman hill-forts during the 1980s. "
All information came from www.navvf.org