The Repository collection found a new home in a building of unusual provenance, secured for this purpose by the son of the Repository's founder (also named William Congreve). The Rotunda was initially erected in London in 1814 as an elaborate temporary marquee in the grounds of Carlton House. It was built for a ball given by the Prince Regent in honour of the Duke of Wellington in anticipation of victory over Napoleon Bonaparte; designed by John Nash, it was made to resemble a military bell tent. After the victory celebrations were over the building languished without a use; but in 1818 the Prince Regent authorised the Rotunda's removal to Woolwich "to be appropriated to the conservation of the trophies obtained in the last war, the artillery models, and other military curiosities usually preserved in the Repository" and it was rebuilt on the eastern edge of the Repository Grounds.