Fun London Tours

Ben Franklin’s London home, the Duke of Wellington’s nose at Admiralty Arch and one of the world’s smallest police stations are among stops on the “Secret London” walking tour with Fun London Tours (London, England; phone +44 79 56 601 697, funlondontours.com).

Leaving from Trafalgar Square, each tour typically lasts 1½-2 hours and costs £12 (near $15.50) per person. Dates are limited; book in advance.