I am busy getting ready for a few upcoming programs and came across another interactive field trip that I thought you'd want to check out. It comes from the folks at Scholastic and has to do with immigration. Not only can you tour Ellis Island, there is also a section that allows you to "hear" from the young immigrants of today and examine some immigration data - all very Common core friendly. I've linked it here.
On the tech side of things, the best way to take a virtual field trip with your students is on a screen (at worst) or on an interactive whiteboard (at best). I've placed a link to a site that will in turn link you to dozens of organizations that offer some kind of virtual field trip. There are some pretty cool things available from the National Parks Service and the Museum of Natural History, just to name two. Check it out in the Links tab above.