A tourist visa is a type of visa that allows an individual to enter a foreign country for leisure and sightseeing purposes. Here are the key points in simple terms:

1. Purpose: It is intended for tourism activities such as vacationing, visiting family and friends, or exploring the country's attractions.
2. Duration: Typically, it is short-term and allows a stay of anywhere from a few days to several months, depending on the country's regulations.
3. Restrictions: Holders cannot engage in any form of employment or business activities during their stay.
4. Examples: If you're planning to visit another country to see its landmarks, relax, and enjoy the culture, you would apply for a tourist visa.

In summary, a tourist visa permits you to travel to another country for recreational purposes but not for working or conducting business.