The British Museum opened in 1759 and houses artifacts from Sir Hans Sloane's vast collection. It has been open since then except during World War I when it closed for safety. In 2000 the central part was renovated with a glass ceiling designed by famous architect Norman Foster. The London Eye is a large Ferris wheel situated on the Thames that offers panoramic views of London. It carries 32 capsules and rotates slowly to complete a revolution in 30 minutes. City Hall in London was also designed by Norman Foster and features a distinctive bulbous shape and spiral staircase.