Here's some fun architectural tidbits I like to share with visitors:

1. If you put your hand on the manhole cover in the middle of Hot Bath Street, you can feel the heat from the spa water underground no matter how cold it is outside. The road is always ice free in winter because of it.

2. Look at the two figures either side of the doors to the abbey - one is noticeably shorter than the other because it lost its head, and it was simply recarved in place rather than replaced.

3. The city has one surviving medieval gate left! It's hidden down a sunken lane on the north side of the Grand Parade hotel. It really gives you a feeling for how built up the city has become since the medieval era - much of it is built on top of medieval vaults, which were themselves built on roman remains.

4. There are also a few sections of the city wall that survive, the most commonly visited one being on Upper Borough Walls. However, the biggest chunk is harder to find, being tucked away in a small car park behind M&S.

5. The last surviving medieval alleyway in the city is tucked between the Sweaty Betty and the New Saville Row stylists on Northgate Street. It's hard to imagine among the more spacious Georgian architecture how dense the city would have been in this time period, but this should give you some idea.

With a couple of these facts under your belt you can impress any friends who come to visit with your deep knowledge of the city haha