The Ambassadors was built to host intimate, small-scale productions and is one of the West End's smallest theatres, seating just 446 people. It was here that Agatha Christie's The Mousetrap first opened in 1952, although it transferred to its sister theatre next door, the St Martin's, 22 years later. The theatre is directly opposite London's legendary celebrity hangout, The Ivy. The nearest Tube station is Leicester Square (Northern / Piccadilly), and for surface rail, Charing Cross. Bus stops on Charing Cross Road are serviced by the 14, 19, 22, 24, 29, 38, 40 and 176 routes. The Ambassadors has only limited wheelchair access. Both the stalls and the circle are only accessible by steps; patrons must be able to transfer to a seat, and although staff can provide assistance, they can't lift them.