Fortifications are militaryconstructions designed for defensivewarfare. They have been used for many thousands of years, in a variety of increasingly complex designs. The practice of improving an area's defense is also known as "fortification". Many military installations are known as forts, although they are not always "fortified".
... business failed) they secretly amassed a remarkable collection of the cars. Now known as the Schlumpf Collection[?], it has been turned into one of the world's great ...