Where is there an octagonal (eight sided) building in Edinburgh or Central Scotland?

Yeah, I found this link, its quite long but it is helpful:

http://books.google.co.uk/books?id=s7OY8uQH7A8C&pg...

Hope you find it ;)

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In Edinburgh there are 4 of note.

Calton Hill observatory is the unfinished octagonal building.

http://www.earlytech.com/common/show_item.phtml?Id...

Walk down to the small octagonal tower behind St Giles.

http://www.allaboutyou.com/country/city-walks-edin...

Thomson's Tower at Duddingston Village

http://books.google.co.uk/books?id=s7OY8uQH7A8C&pg...

The octagonal "Goose-pie" house built by Allan Ramsay the poet, part of Ramsay gardens.

http://www.rampantscotland.com/visit/blvisitramsay...

(The Usher Hall has 6 sides topped by a copper circular dome. 5 curved sides at the front. Google Earth it to see the layout.)

Not sure, but think that Camera Obscura at the top of the Royal Mile might be octagonal

EDIT: Or perhaps the Royal Observatory on Calton Hill?

When I've had a few bevvies, EVERY building in Edinburgh has eight sides!

Can't be more helpful than to tell you that there is an octaginal church in Norwich. Good luck