Why St.Albans? My mother is a member of a forum that joins mostly russian and ex-soviet women married to foreigners, and via that forum she got to know one who is married to a Scottish guy and lives very close to St. Albans.
Where is St.Albans? It's a bit to the North from London, takes about an hour and ten minutes to get there from Gatwick.
How is St.Albans? Like most of the places arouond London and south of it (and most probably just all around), it's a small nice traditional English city with nice small streets, and walking lanes, gardens and lakes, shops and cafes, etc...In total, a very pleasant place.
What to see in St.Albans? All of it, you have to walk through the busy street market there and see all they're selling, you have to just walk around the streets enjoying the sight. The most impressive sight in St.Albans though is its old abbey, a huge old church with, amazingly comfortable and heart catching even for people like me not belonging to the same religion at all, beutiful wood works, the way the light falls from the long high windows, a purely peaceful feeling, after finishing with the abbey itself, walk down its garden to the lake and the old roman wall that used to surround the city in the old times, then come back up and sit in probably the most famous cafe there "Abigails'" and have some hot chocolate, that's real taste and the cream they put at the top is just pure pleasure, also make sure to get yourself some of the awesome Belgian chocolates in the store next door, they're a bit expensve but totally worth it!!
So...? If small European city with a welcoming nice atmosphere is your thing, St.Albans is surely worth a visit if you're nearby.