Kronverk, Fortification at Peter and Paul Fortress, Saint Petersburg, Russia.

Kronverk is a crownwork fortification on Artillery Island, separated from Petrogradsky Island by the Kronverksky Canal and from the fortress proper by the Kronverksky Strait. Built in 1705–08 and rebuilt in 1752 and 1800, its earth ramparts and ditches enclose the Artillery Museum. The eastern rampart, where five Decembrists were hanged in 1826, is marked by a 1975 obelisk.

The Kronverk was built in 1705–08 as a ground fortification protecting the Sts. Peter and Paul Fortress, and was reconstructed in 1752 and 1800. On 13 July 1826, five Decembrist conspirators were hanged on its eastern rampart; an obelisk was placed on the supposed execution site in 1975. It now houses the Military Historical Museum of Artillery, Engineers and Signal Corps.

The Military Historical Museum of Artillery, Engineers and Signal Corps houses weapons and equipment spanning multiple centuries of Russian military development. Visitors can see how defense technology evolved over time through these displayed collections.

The site is located on Artillery Island and is easily accessible by public transport serving the Peter and Paul Fortress complex. Plan enough time to explore both the outdoor grounds and the museum spaces inside the fortification.

On 13 July 1826, five Decembrist conspirators were hanged on the eastern rampart of the Kronverk, not a bastion. In 1975 an obelisk was placed on the supposed execution site, which visitors can find on the rampart.