what on the tower top ?
a helipad ?
do you know any more helipad ?
Eddystone Lighthouse,
http://en.wikipedia.org/wiki/File:Phare ... -Rocks.jpg
Bishop Rock Lighthouse,
http://en.wikipedia.org/wiki/File:Bisho ... Scilly.jpg
Smalls Lighthouse,
http://www.flickr.com/photos/24592677@N ... wJH-8PLX1B
Les Hanois Lighthouse,
http://www.flickr.com/photos/49383238@N ... cUj-9biEr2
Longships Lighthouse,
http://www.flickr.com/photos/10966906@N ... sR4-b8rE6v