Belgian general Henri Alexis Brialmont:
“A fortified Bucharest would increase the military importance, so that the country could participate in a war or could refuse participating or ask for advantages. Otherwise, the coutry could not have claims from other partner countries.”
The Forts line have been built between 1866 and 1882, which was an order from king Carol 1st, and have costed very much (613 million euros nowadays). They have never been used, they are left behind.