Saint Martin is a unique gem among picturesque Caribbean destinations: one wondrous island split between two separate countries. Dutch Sint Maarten and French Saint-Martin have coexisted peacefully here since the Partition Treaty of 1648. (No wonder they call it the “Friendly Island.”) Nearly all of its 2 million annual visitors fly into the Dutch side, home of Princess Juliana International Airport (and its world-famous beachfront runway). Though most of the main tourist attractions are within French borders, wherever you end up on the island, you won’t be far from pristine surf, boutique beachfront hotels, and colorful cafes and bars teeming with local flavor. Here’s how to map out your ideal St. Martin getaway.