For nearly 200 years, Trafalgar square has been a London institution. Flanked by the National Gallery, the square features two fountains, several busts and bronze lions at the base of Nelson's Column.

Delve into London's macabre past at this interactive attraction, which explores the history of Jack the Ripper, Guy Fawkes, Sweeney Todd and other criminals through live actors, exhibits and rides.

Everyone knows that person who spends weeks sniffing around travel blogs, going deep into Tripadvisor rabbit holes, collecting Google docs from friends of friends, and creating A Beautiful Mind–style ...