On 22 October 1910, Millwall crossed the river to South London, moving to Cold Blow Lane in New Cross. The fifth ground was called The Den, built at a cost of £10,000 by noted football ground architect Archibald Leitch. The first game played there was against Brighton & Hove Albion, which Brighton won 1–0. Millwall remained there for 83 years, until moving to their sixth and current ground, at first known as The New Den but now called simply The Den, on 4 August 1993. The ground has an all-seated capacity of 20,146. A Sporting Lisbon team, managed by Bobby Robson helped open the ground by playing a friendly, which The Lions lost 2–1.