Jeju Island, South Korea

Jeju's coastal resorts are popular vacation destinations, but the wild areas beyond the beaches are why Jeju Volcanic Island and Lava Tubes is a UNESCO World Heritage site and the entire island is designated as the Jeju Global Geopark. The park's premier site is 6,397-foot Hallasan (South Korea's highest mountain), a shield volcano with a summit crater lake. Additional geomorphologic features found on Jeju include spectacular volcanic cones and craters, dramatic waterfalls, ever evolving rocky shores, and the Geomunoreum lava tube system, considered the finest cave system of its kind in the world.

Three designated Geo-Trails link many of the main geological sites and connect to six

Victoria, Australia

Escape the heat by hitting the slopes in Victoria's ski country. The region's resorts offer a wide array of snow activities including dogsled rides, tobogganing, skiing, snowboarding, and snowmobiling. Use Melbourne as a base for day trips to beginner-friendly Mount Baw Baw, or stay slopeside at major alpine resorts such as Mount Hotham, billed as the "powder capital" of Australia, or Falls Creek, Victoria's largest alpine resort.

"The Maze area [at Falls Creek] is the perfect place to test your skills," says Falls Creek marketing executive Victoria Gregory. "Surrounded by gum trees, you'll discover secret powder stashes and new runs hidden within the trees. This distinctly Australian skiing experience reminds you you're in the Australian alps, with a view looking onto Mount Bogong, Victoria's highest peak."

Philadelphia, Pennsylvania

Look beyond Philadelphia’s “Cradle of Liberty” historic sites to discover a wealth of other world-class venues. One city treasure hiding in plain sight is the Philadelphia Museum of Art, the only U.S. stop (June 24 to September 13, 2015) for the "Discovering the Impressionists" exhibition showcasing more than 80 works by Monet, Renoir, Degas, Manet, and others.

There's also Opera Philadelphia, closing its 40th anniversary season with Charlie Parker’s Yardbird (June 5 to 14). And, across the street from Independence Mall is the state-of-the-art National Museum of American Jewish History (NMAJH), sole U.S. host of the “Richard Avedon: Family Affairs” photography exhibition from Jerusalem’s Israel Museum (through August 2).

Bermuda

Cup Match is Bermuda's equivalent of the Super Bowl. The main event (July 29 to August 2) pits the island's two cricket teams—St. George's and Somerset—against each other and sparks a multiday, islandwide celebration. Cup Match Summer Splash events include BeachFest on Horseshoe Bay Beach, July 31, and the Non-Mariners Race (a zany spectacle with patchwork "vessels"), August 2. The cricket competition—hosted by St. George's Cricket Club this year—is part of the island's two-day national holiday

Singapore

Singapore is hosting its biggest ever National Day celebration this year in honor of the young city-state's 50th birthday (August 9). The planned four-day Jubilee Weekend is "the perfect time for visitors to witness Singapore's creative energy and spirit on full display," says Kershing Goh of the Singapore Tourism Board. Jubilee highlights include nightly fireworks shows over Marina Bay, free or discounted admission to several museums, and a colossal Sing50 Concert (August 7) performed by a nearly all-Singaporean cast. The can't-miss event is the National Day Parade, which, for the first time, will span the entire

Alberta, Canada

Edmonton is welcoming the world this summer. The Festival City is hosting a series of international events, including the FIFA Women's World Cup Canada 2015 (June 6-July 4) and the Edmonton Folk Music Festival (August 6-9). Multicultural artworks, crafts, performances, and foods representing more than 85 nations will be featured at the Edmonton Heritage Festival (August 1-3).

"I love the summer mainly because of all the festivals—Heritage Days, Taste of Edmonton, Fringe Festival, and the Street Performers Festival are a few of my favorites,"

England

Celebrate the 800th anniversary of the Magna Carta, or "Great Charter," (June 15) by driving one or more of the six Magna Carta Trails. Located throughout England, the routes are designed to actively engage visitors in the history of the Magna Carta, the document that established the principle that no man, not even the king, is above the law. The landmark charter helped shape modern judicial systems.

Each trail includes key charter towns; historical sites related to the year 1215; and 800th-anniversary events, such as the official commemoration ceremony at Runnymede Meadows (June 15) and the Magna Carta Festival (June 13-14).