Vacations to this famous city delight visitors with a distinctive, historic charm that lends itself to dozens of must-see tourist attractions. In fact, much of today's London would still be recognizable to a Victorian time-traveler - the Houses of Parliament, Tower Bridge, the imposing railway terminal at Paddington, King's Cross, St. Pancras and the exuberant Royal Courts of Justice. While London continued to expand exponentially, it also pioneered the infrastructure that makes a modern metropolis function.