Puerto Rico may be a commonwealth of the United States, but its culture stays true to its Spanish roots and Caribbean heritage. Nowhere is this more evident than in bustling San Juan, where customs and folklore continue to thrive alongside modern day conveniences. Known as “La Cuidad Amurallada” (the walled city), San Juan was founded and settled by the Spanish in 1521. Today, San Juan is the second oldest European settlement in the Americas with one of the largest natural harbors in the Caribbean. You can fully appreciate its colonial past by taking a stroll through Old San Juan. From architectural landmarks to world-class art museums, this picturesque part of the city is full of interesting things to see and do. And for the more adventuresome, you won’t want to miss the massive El Yunque Rain Forest, once believed to be the Fountain of Youth.