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This bright blue grotto at Canada's Bruce Peninsula National Park is so mesmerising that it doesn't quite look real.
That's why we have compiled a comprehensive list of lesser-visited destinations, whether they are natural or man-made spectacles, hidden wonders, or points of breathtaking scenery.
From a Japanese island that doubles as an active volcano to a neon green lake in New Zealand, here are our top 100.
Methodology: We have considered the number of current traveller reviews on TripAdvisor to rank the attractions in this list, from those with the most to least visitors. Have we missed any under-the-radar spots? Let us know in the comments.
Will Heilpern contributed to this story, including an earlier version focused on Europe.