[ars]

People seem to completely forget how valuable having a secure place to store your things is.

If you travel to the White House using public transportation with a baby carriage - well, you can't. There is no place to leave it, and they won't let it in. (Same for your purse, or a backpack, or even a water bottle.)

If you take a car you can leave all that in your car. Of course it's not easy finding a place to put your car near the White House. What I did is drive almost all the way, to a parking lot, then take a train for the last couple miles.

[bdonlan]

Japan has a good solution for this - most of the larger train stations (and many of the medium-sized ones as well) have "coin lockers" (which, despite the name, these days often take transit IC cards instead of coins) you can rent to store your stuff until you're ready to head home. In larger tourist hubs like Akihabara there'll also be a ton of lockers in the vicinity of the station run by third parties as well.