Dulcius means sweeter. Ironic, no?

I agree that the catacombs are more suitable for maybe your third trip to Rome, and I also would choose the Borghese over the Vatican museum.

Rome should be absolutely lovely in May.

Rome should be absolutely lovely in May.>>

jmq, once you have been to the forum, it is well worth walking up to the capitoline, where there are two sets of steps. To the left, if you are lucky, you will see the most beautiful wisteria going up the side of the steps to the church at the top.