I stumbled across St John Parish in Second Life via someone’s Flickr stream when I saw some nice photos of the land. St John Parish is owned by Gabrielle Riel, Prim Minister, The Duchess of Carntaigham and makes up a group of sims that extend to Lake St John, Bayou St John and St John Woods.
St John Parish itself is a bustling urban sim with a theme set in historic New Orleans, Louisiana in the early part of the 20th century.
Rolpelay is positively encouraged but is not at all required. Indeed the rules will allow you to visit the sims without even being in period attire. However if you do want to get into theme then you should be looking at anything from Medieval to Victorian, to Edwardian to the early 1920’s, so quite a lot of scope.
This means you can generally stroll around, take photos and not get chased off the lawn for not being dressed in the right attire. However you may want to try and ensure you don’t get ran over by the tram that traverses St John Parish.
In terms of entertainment St John Parish offers ragtime and early Jazz.