crownwork

From 1688-90, an advanced line of defence was added called the Crownwork.

Their chief use is before a hornwork or crownwork.

And from the crownwork hung carved vines of purple grapes, clusters "as tall as a man."

A crownwork serves a similar purpose, but unlike a hornwork, it contains full bastion.

A crownwork is an element of the trace italienne system of fortification and is effectively an expanded Hornwork.

Its collections, consisting of Russian military equipment, uniforms and decorations, are hosted in the Kronverk (a crownwork) of the Peter and Paul Fortress situated on the right bank of the Neva near Alexander Park.

The crownwork was used to extend the fortified area in a particular direction often in order to defend a bridge, prevent the enemy occupying an area of high ground, or simply strengthen the overall fortifications in the expected direction of attack.