Karuizawa, Japan, and Whistler, Canada, will mark 20 years as sister cities in 2019. To celebrate, we've compiled 20 superlatives to highlight the bonds between these charming mountain towns.

1. Best Olympic experience

Karuizawa, located an hour by train from Tokyo, hosted the debut Olympic curling competition for the Nagano 1998 Winter Games, while Whistler hosted Olympic sliding and skiing events for Vancouver 2010.

Visitors can ride the world's fastest ice track at Whistler Sliding Centre, home of the 2010 bobsled, luge, and skeleton competitions, or learn to curl like an Olympian with a lesson at Karuizawa Ice Park.

Read the rest on the G Adventures blog.