Disclaimer before I get flamed: I know Americans have motels, just not the kind of motel I'm talking about.I'm Brazilian.
One of these days I was talking to a friend in the US, and he was telling me he went out with a girl. They went to see a movie, and then they made out in the car... just preliminaries. And then they went home. And I thought "why didn't you take her to a motel?". And then I realized there are no motels in America (like the ones we have in Brazil).
In Brazil, if you wanna have sex with somebody but can't do it in your house or hers, you take her to a motel. A motel is some sort of hotel (or some sort of motel like you have in the US), only it has no other purpose but sex. If you go to a motel, people know you are having sex. Inside a motel room you have a bed, a TV with porn channels, a minibar, some mirrors, a bathroom, and depending on the quality of the motel, things you can use for sex (like condoms, dildos and stuff). Motels are extremely common, and you'll find them in any city.
Some pics:


See more here (sample motel website):
http://www.solariummotel.com.br/Why there are no such places in the US? Or are there, but I haven't heard of?
How about other countries?