Fujisawa, we went to just for the Old Navy. It is a lovely little town there with nice shops and a fun little shopping center which we really enjoyed. The original plan was to head to Odawara Castle after but we took a little too long and decided to find a last minute airbnb. This ended up taking us to Yugawara. Yugawara is a tiny little mountainous town that has lots of hot springs. It is near some of the towns we have visited before during Valentines weekend. We figured it would be a nice place and online the airbnb looked nice, however things got a little complicated with the host. When we finally made it, it was atop a huge hill and over looked the little town and the ocean. When we got inside it was dark, dingy, old and not as nice we expected. We made the best of it and had some much needed quiet time, there was no wifi, no tv, and no reception on my phone. We made curry and talked; although the place was a bit of an ew, I would say the experience was fun. The next morning we wandered our way to the station and took the train to Odawara; where we planned to see the castle.
When arriving in Odawara we headed towards the castle. While we were walking we found an archaeological dig site just outside the castle. It was closed off to the public but there were some leaflets that explained what they had found there, it was pretty interesting. We kept walking and found a precarious sign that was in Japanese, the gist I got from it was that the castle was closed for earthquake preparedness construction...we decided to keep walking and check it out for sure. When we got up there it sadly was closed; we were able to walk around the outside, take some fun pictures and check out the monkeys (they them in a cage outside the castle). We saw a castle in Atami during Valentines weekend which in my opinion was much more impressive. Although this one was still 'nice' I would suggest taking the extra time to go see Atami's Ocean view castle which is quite amazing.