An off-the-beaten-path tour of the city's hidden highlights, and the stories behind them.   London is full of curiosities. Who knew that beneath the Albert Memorial lies a chamber resembling a church crypt? Or that there are catacombs under Camden? Who would expect to find a lighthouse in East London, sphinxes in South London, dummy houses in West London, or a huge bust of film director Alfred Hitchcock in North London?   How many of those who walk past Cleopatra's Needle pause to consider why a 3,000-year-old Egyptian monument stands beside the Thames? How many know that what was once London's smallest police station can be seen in Trafalgar Square? Or that pineapples are used in the architectural design of so many buildings? Or why there are memorials to the Mayflower and Pilgrim Fathers in Rotherhithe? Learn more about the capital of curiosities in this delightful guide for lovers of history, trivia, and travel.