Tourist destinations such as Mecca (6 letters) and Machu Picchu (4 letters) are two of the most popular places to visit in the world. Mecca is a city in Saudi Arabia that is considered the holiest site in Islam, while Machu Picchu is an Incan citadel located in Peru that is one of the most iconic archaeological sites in the world. Both destinations attract millions of visitors each year, making them two of the most sought-after tourist destinations.