You can't take the train out of the boy.

M: Henry, would you like to go on a trip to the beach with Mom and Dad?
H: No.
M: Oh. Where would you like to go?
H: To ride on a BIG. CITY. TRAIN!
__________

When Henry was totally uninterested in a beach trip, Keith and I quickly began thinking of a train ride to DC. We thought the National Museum of Natural History would be neat for him...

M: How would you like to ride a train to a city and see a dinosaur museum?!
H: How about a train museum?