Big Ben

, one of the seven hills of ancient Rome. The Romans built temples there and the emperors Diocletian and Constantine located their famous baths on… See more » Tower of London, a 900-year-old fortress in London, England, now used as a museum. The 18-acre (7.3-hectare) fortress, consisting of a number of… See more » Westminster Abbey, the most famous church in Great Britain. It stands on low ground on the left bank of the Thames in the City of Westminster, a… See more »