Inside the "standard" class car on the Eurostar train.
TRAVEL TIP: Buying train tickets in Europe for "long" trips (1.5 hours +) is almost always cheaper if you buy in advance online. Also - if you don't have a credit card with a chip (a lot of US banks are now issuing them), leave time to go into the ticket booth, as the ticket kiosks usually only take chip cards. When we were in Belgium, we missed two trains from Brussels to Bruges because we had to hunt down the ticket office and then stand in line!
