Most destination rankings are reader polls dressed up as journalism. BookRetreats’ 2025 Holiday Happiness Index took a different approach—analyzing 47 cities across five measurable wellness criteria: sunlight hours, sleep quality, access to healthy food, green space, and opportunities for exercise. Lisbon topped the list. Not because it’s charming (it is), but because the numbers lined up across every single category.
Sunshine, Steps, and Salad: What the Index Actually Measured
The five-factor framework gives the ranking real teeth—and Lisbon scored across every one of them.
According to BookRetreats, Lisbon logs 2,828 hours of sunshine annually—one of the highest totals among major European capitals. Nearly 10% of its restaurants carry a healthy classification, a figure that reflects genuine food culture rather than a wellness-tourism overlay. Its compact, hilly layout turns sightseeing into exercise without anyone calling it that. Helsinki ranked second, Orlando third, with Athens and Edinburgh rounding out the top five.
Here’s what the data showed at a glance:
- Ranked No. 1 out of 47 destinations in BookRetreats’ 2025 Holiday Happiness Index
- 2,828 hours of sunshine annually
- Nearly 10% of restaurants classified as healthy
- Walkable, compact street layout cited as a key exercise contributor
- Travel + Leisure readers ranked Lisbon No. 9 in Europe (2025) and No. 12 (2026)
Not a One-Off: Lisbon’s Recurring Place at the Top
Two independent rankings, the same city, different years—that kind of consistency is worth paying attention to.
Travel + Leisure’s reader surveys placed Lisbon ninth among Europe’s best cities in 2025, then twelfth in 2026—a slight dip in position that still reflects sustained recognition across consecutive years. For a bookings-platform index to align this closely with a major travel publication’s reader poll, the overlap needs explaining. It isn’t coincidence.
Lisbon’s identity—waterfront walks, hilltop viewpoints, dense historic neighborhoods, a food scene built on fresh seafood and seasonal produce—maps almost perfectly onto BookRetreats’ wellness criteria. The city wasn’t engineered for rankings. The rankings caught up to what the city already was.
For the post-pandemic cohort of Millennial and Gen X travelers who pivoted hard toward slow travel after 2022—fewer destinations, longer stays, more walking, better meals—that matters more than a glossy headline. Lisbon already offered all of it. As BookRetreats’ findings suggest, when sun, easy strolling, greenery, and good food converge in one place, the destination starts to match the mood travelers are actually after. Cities that deliver on all four simultaneously are rarer than the rankings make them seem.
If you’re mapping out a European city break, the data here is consistent and cross-sourced. When multiple credible, independent sources point the same direction across consecutive years, that’s as reliable a signal as travel rankings get.
