This building established Rogers's trademark of exposing most of the building's services (water, heating and ventilation ducts, and stairs) on the exterior, leaving the internal spaces uncluttered and open for visitors to the centre's art exhibitions. This style, dubbed "Bowellism" by some critics, was not universally popular at the time the centre opened in 1977, but today the Pompidou Centre is a widely admired Parisian landmark. Rogers revisited this inside-out style with his design for London's Lloyd's building, completed in 1986 – another controversial design which has since become a famous and distinctive landmark in its own right.