Woolwich Arsenal

The Royal Arsenal, Woolwich carried out armaments manufacture, ammunition proofing and explosives research for the British armed forces at a site on the south bank of the River Thames in Woolwich in south-east London, England. It was originally known as the Woolwich Warren, having begun on land previously used as a domestic warren in the grounds of a Tudor house, Tower Place.

More information on the Wikipedia page

See also Woolwich Arsenal Station; the Royal Arsenal Railway, a private military railway which ran inside the Royal Arsenal, Woolwich, southeast London is described on the Wikipedia page.