London

Here's an ideal itinerary for one day in London that is both unusual and exciting:

Morning: Start your day with a visit to the Columbia Road Flower Market. This market is only open on Sundays, but it's definitely worth the visit. You'll find a wide variety of flowers and plants, as well as street performers and food vendors. It's a great way to start your day and get a feel for the local culture.

Afternoon: Next, head to the Old Operating Theatre Museum and Herb Garret. This museum is located in the attic of an old church and is the oldest surviving operating theatre in Europe. You'll learn about the history of surgery and medicine, and see some of the tools and techniques used in the past. The herb garret is also worth a visit, as it showcases the herbs and plants used in medicine during the 19th century.

Evening: Finish your day with a visit to the Barts Pathology Museum. This museum is only open on certain days, but it's definitely worth the visit. You'll see a wide variety of medical specimens, including preserved organs and bones. It's a fascinating and unusual way to end your day in London.

Overall, this itinerary is perfect for those who want to experience something different and unusual in London. You'll get to see some of the city's hidden gems and learn about its history and culture.