A year later, construction of stone fortifications started.
The American light artillery was ineffective against the stone fortifications of the city.
There, in the first years of the Roman occupation, a stone fortification had been built.
In others, the new wall rises just feet from the stone fortifications built by British engineers two centuries ago.
In 1885 the development of high-explosive shells made stone fortifications obsolete.
The old city was protected with stone fortifications, part of which have been preserved to modern times.
In 1511 work began to replace the wooden palisades with massive stone fortifications, many of which can still be seen today.
Around 1210 this was replaced by a stone fortification.
It is assumed that he built the first stone fortifications at the site.
The park also includes traces of stone fortifications built in the 18th century.