There is a dark, mysterious underside to Puerto Rico that few travelers to this sunny island have seen. For most visitors, San Juan is Puerto Rico. This bustling, congested city can be a jarring ...

A network of more than 220 subterranean caves stretches 286 acres below the bustle of the island’s heavily trafficked thoroughfares. About an hour and half from the city of San Juan, far from the ...

At our tour guide’s mention of scorpion spiders, an uneasy murmur rippled through the crowd. We were about to enter the labyrinth — a twisty dark corridor that weaves through part of the Camuy River ...

A Note to our Readers Smithsonian magazine participates in affiliate link advertising programs. If you purchase an item through these links, we receive a commission. Follow Us Explore Subscription ...

How do travel advisors pick a host agency?A Travel Experts survey shows what advisors value most in a host are commissions, support and technology. How the worst travel day of my career turned ...