Here are a few links to Roman websites that you might want to take a look at:
Fishbourne Roman Palace: the obvious starting point if you enjoyed "The Leopard in the Golden Cage".
Roman history for kids: a good place to look for help with Roman homework!
Hadrian's Wall: another English Heritage site, with lots of places to visit along the wall and events throughout the year.
The mosaic of Cupid riding a Dolphin at Fishbourne Roman Palace.
Vicus is one of several re-enactment societies who take part in events around the country, mainly during the summer months. Another similar society is Legio VIII Augusta MGV. I'm finding that 'living history' events give me a really good sense of what it would have been like to live in the past.
National Roman Legion Museum in Caerleon: they have lots of events all year round.
If you're a teacher looking for resources to teach children about the Romans (other than mine, which are on the schools page), help is at hand for you on the Save Teachers Sundays website, where you can find Romans KS2 planning and resources.