The San Antonio Missions have officially been designated a UNESCO World Heritage Site. An elite list with just 22 existing U.S. landmarks included, the five Missions (including The Alamo) are taking their place among other great American historic and cultural institutions like the Statue of Liberty and Independence Hall, in addition to natural treasures such as the Grand Canyon and world wonders like the Great Wall of China. The Missions, which are the largest collection of the Spanish colonial architecture in the U.S., are the third designation in the country in the last 20 years.