Mexico is one of the top tourist destinations in the world. The country is known for its beaches, culture and UNESCO World Heritage Sites. There are a plethora of beaches in the country with the most popular being the resort town of Cancun. University students during their spring break make the resort their top destination during this period. Other beaches include the beach in Acapulco, Cabo San Lucas, Mazunte, etc. Activities to be carried out on the beaches in Mexico include surfing, snorkeling, cliff diving, and fishing. Tourism in Mexico is the third-largest source of income for Mexico. The country is one of the most visited countries in the world and the second-most visited countries in the Americas. In 2017, the number of visitors in Mexico was close to 40 million which was up 12 percent from 2016. It has been estimated that the number is going to increase at a rate of about 4.2 million per year. Foreigners visiting Mexico will not be allowed entry into or exit from Mexico with more than $10,000 or its equivalent in any currency. Punishment for drug-related crimes are very severe and those who are caught engaging in any of these offenses will be jailed for a long period of time.