Top view in Google Maps: https://www.google.com/maps/place/Barbican+Centre/@51.5201935,-0.0944449,119m/data=!3m1!1e3!4m6!3m5!1s0x48761b56fb64b275:0xc756e26675d2

Top view in Google Maps: https://www.google.com/maps/place/Barbican+Centre/@51.5201935,-0.0944449,119m/data=!3m1!1e3!4m6!3m5!1s0x48761b56fb64b275:0xc756e26675d21f40!8m2!3d51.5202077!4d-0.0937864!16zL20vMG02cTY?entry=ttu&g_ep=EgoyMDI1MDUwNy4wIKXMDSoASAFQAw%3D%3D https://www.google.com/maps/place/Barbican+Centre/@51.520193... IIUC it's the half circle at the top and the rectangular building at the bottom with a green park between them.