I've been to four sites(Alatornio kirko,Aavasaksa,Dorpat observatory and JACOBSTADT point).

It's scientific interest,but almost sites are difficult to get.

Thus the more these are difficult to get,the more emotional when found.Struve Geodetic Arc is so.

When I've been to the Dorpat Observatory in Tartu,Estonia,it isn't open for public.

But the workers to restore the architecture allowed me to see inside and climb the ladder up to the top so that I could see over the view of city of Tartu.