Krka National Park, Croatia
Two rivers come together as a set of waterfalls in this remote national park dotted with monasteries and nature walks. Visitors say the emerald-green water lives up to its photogenic hype.
Great Blue Hole, Belize
Tunnels and caves weave beneath this dazzling natural sinkhole off the coast of Belize City. Experienced divers will do best at what Frommer’s describes as the “holy grail” of scuba sites.