There's a lot to do on Tenerife, the largest isle of Spain's Canary Islands. But when you check into the posh Gran Melia Palacio de Isora, situated on Tenerife’s sunny southern side, you may struggle to leave the resort. Known for its expanse of playful pools and 5 stellar restaurants, the hotel has suites with personal, outdoor Jacuzzi baths -- a perfect setting to take in the sunset. Want to explore more? Hike the nearby mountain trails of Teide National Park, which, at nearly 47,000 acres, is the largest national park in Spain.