where Americans can travel with and without a visa. Some countries, such as Turkey and Chile, will issue a visa upon arrival, while other countries, such as Australia, much of Africa and the Indian subcontinent, require a visa prior to arrival. I have experienced this in Turkey and Panama. Turkey? They just take your $30 and slap a visa sticker in your passport, with not a second glance. And it looks like I better get going on visas if I want to visit Vietnam and China later this year.