London's Royal Residence, from the State Rooms and royal gardens to the Queen's Gallery and the (yawnfest) changing of the guard
The royal palace so nice Henry VIII honeymooned here twice—and then three times, and four, and five...
The 17th century royal palace where Queen Victoria grew up and Prince William and Kate live
Harrods of London installed a novelty in 1898: the world's first true escalator (to be fair, an inclined moving belt with metal bars for traction did make its debut two years earlier on Coney Island). The oddness of a moving staircase so unnerved many shoppers that employees were stationed near it with smelling salts and cognac to help revive those overcome with fear.