If you are planning to visit Guatemala, check this list. Citizens from the following countries don't need a visa for visits up to 90 days:
Andorra, Antigua and Barbuda, Argentina, Australia, Austria, Bahamas, Bahrain, Barbados, Belgium, Belize, Brazil, Brunei, Bulgaria, Canada, Chile, Colombia, Costa Rica, Croatia, Cyprus, Czech, Denmark, El Salvador, Estonia, Fiji, Finland, France, Germany, Greece, Guam, Guatemala, Honduras, Hungary, Iceland, Ireland, Israel, Italy, Japan, Kuwait, Latvia, Liechtenstein, Lithuania, Luxembourg, Macedonia, Madagascar, Malaysia, Malta, Marshall Islands, Mexico, Monaco, Netherlands, New Zealand, Nicaragua, Norway, Panama, Paraguay, Peru, Poland, Portugal, Qatar, Romania, Russia, Saint Vicent and Grenadines, Saint Lucia, San Kitts and Nevis, San Marino, Sao Tome and Principe, Saudi Arabia, Singapore, Slovakia, Slovenia, Solomon Islands, Spain, South Africa, South Korea, Sweden, Switzerland, Taiwan, Trinidad and Tobago, Turkey, Tuvalu, Ukraine, UAE, UK, Uruguay, USA, Vanuatu, Vatican and Venezuela.
Costs: Simple Visa and Tourist Visa $25 valid for a single entry; Multiple Visa $50 valid for multiple entries (valid for 90 days), Business Visa $50 for multiple entries (valid for 180 days)
Images from http://www.investinguatemala.org