The can ham can’t find a buyer. It can be difficult to see the Gherkin because the walkie-talkie and cheese grater are in the way. London’s skyline is made of glass, steel and nicknames. Sometimes these names begin as a criticism: the city’s tallest building got its name because it was described as a “shard of glass in the heart of historic London” by a heritage group. But over time, they denote familiarity and, often, affection. On December 13, the City of London approved plans for a new skyscraper that will be as tall as the Shard; there’s a good chance he’ll end up with a nickname based on his shape.