This scheduled ancient monument and international landmark site is on a pretty riverside location above the Thames Tunnel. Paintings, models, prints and statues commemorate Isambard Kingdom Brunel's first and last projects: the oldest tunnel in the London Underground and SS Great Eastern, the first modern ocean liner. Access is available on advertised days to the neoclassical Grand Entrance Hall, a one-time banquet hall and underground fairground. The underground chamber is currently being restored as a gallery and performance space.