The first thing you will notice from the pictures is of course that this is not a castle. It is indeed a boat. Again, as you can tell from the pictures - it is unlike any boat you may have come across before. For this is the Tattershall Castle, and it is London's party boat.
Starting off its life as a proper service boat, running people backwards and forwards across the River Humber, the boat has long since retired and been refurbished to sit splendidly as an elegant bar moored permanently close by Embankment station.
Sitting practically across the water from the iconic London Eye, the Tattershall Castle (or Tatts for short), is basically a boat turned into an amazing floating bar, fully equipped with different rooms full of cocktails, gins and all the things you need to relax on the open seas (ok the Thames).
Depending on the day, or night, you come you could find yourself with a whole manner of different choices of diversion. Some nights are set aside for comedy, while others are for jazz - should you arrive on a Thursday, cocktails take over, and Sunday is of course all about the traditional roast. If I were you, I would really think about looking to see what's on first, then timing your visit to coincide (of course, get tickets for the events that require them first, that much is a given).
There are all kinds of menus to check out too - from Brunch to Sunday, Burger to Bar - so take a moment to peruse and ponder, so you know what you want in advance, and can therefore spend that valuable saved time looking at the beautiful lights on the Thames, or simply dancing the night away on this most unique of party boats.