6 Destinations You Must Visit Before You're 30

You can't walk anywhere on the island of Koh Phangan without seeing other 20-somethings just about everywhere. Credit the crystal-clear waters, the boundless bars, or the really cheap cost of visiting — all are reasons to attract a fun-loving crowd. Plus, the island is home to the infamous Full Moon party, a night (and morning) of dancing on the beach that draws young people from all over the world.

Will Smith dubbed it the city where the heat is on, and he probably meant it in more ways than one. Sure, the temps are high, but a nightlife boasting trendy bars and clubs, the boisterous beach scene, and fun activities like bike riding is more than enough to make anyone looking for a good time want to visit.

Where else in the world can you stroll past incredible Gaudí architecture during the day, get tan at the beach in the afternoon, and hit up waterfront clubs all in a day's worth? Count Barcelona as one European destination that will never get old for both locals and tourists alike.

Live music venues, chic cafes, great shopping, world-renowned hiking, wine tasting, a local university that's an attraction in itself — the list goes on and on when you think about all that might draw young adults to Cape Town. Oh, and did we mention the fun but laid-back nightlife, friendly locals, and affordable prices across the board?

Many 20-somethings who visit Panama City love it for its perfect balance of adventure and relaxation. Depending on your mood, you can find yourself lounging at a beautiful beach resort just outside the city or partying along the Boulevard de la Rumba, or Party Boulevard. The city itself offers everything you could ask for from an urban metropolis, from great cuisine to significant museums.

Just a short distance from downtown Kingston, you can find beaches that rival those of Europe's or Asia's most famous. The fun-loving spirit of the country is palpable here, thanks to the area's friendly people and its tradition of hosting alfresco concerts and festivals. Some spots, such as Hellshire Beach, are free of stuffy hotels and offer a true local experience for young adults looking for a unique experience.