Location-specific stuff to do

Go inside the world's largest cave
Ride on the Jacobite Steam Train
Go behind a waterfall
Stay in a lakeside cottage
Relax in a foam bath
Eat bitterballen in The Netherlands
Row across Lake Bled, Slovenia
Witness te Northern Lights
Celebrate Summer Solstice at Stonehenge
Drink from a coconut at the beach
Go on a romantic camping break
Watch a rodeo competition
Ballooning over Bagan
Run the "original" marathon (from Marathon to Athens)
Eat Taramasalata
Hike Bryce Canyon
Kayak a lake
Watch a Thai Boxing match
Ride an upside down rollercoaster
Trek in Nepal
Eat corn on the cob
Eat pico de gallo
Walk the Appalachian Trail
Ride a horse on a beach at sunset
Zipline from Spain to Portugal
Eat Pierogi
Watch a game of polo
Sunbathe on an atoll
Wander through a sunflower field
Visit all of the locations on a Canadian monopoly board