The scale of the question

In its first issue, The Regenera Luxury Magazine opened its Intelligence section with a simple observation: international tourism set a new record in 2025, then slowed in the first half of 2026 ¹. What is well measured, the Magazine argued, is growth. What is not yet measured is whether that growth leaves places better off ¹. This analysis takes the argument down to the scale at which tourism is actually felt, the destination, and asks what the global figures show, where the pressure concentrates, and which indicators exist to measure it place by place.

The size of the sector

UN Tourism recorded about 1.52 billion international arrivals in 2025, 4% more than in 2024, and preliminary international tourism receipts of about US$1.9 trillion ¹². Europe received 793 million arrivals, Asia and the Pacific 331 million, the Americas 218 million and Africa 81 million, while the Middle East came close to 100 million ². Growth then stalled. Arrivals in the first half of 2026 rose by 0.4%, to an estimated 690 million, and in September UN Tourism cut its full-year forecast from 3–4% to 1–2%, citing insecurity in the Middle East, high oil prices and inflation; arrivals in the Middle East fell by 22% ³.

The World Travel & Tourism Council (WTTC) puts the sector’s contribution to world GDP at US$10.9 trillion in 2024, above its 2019 level of US$10.3 trillion ¹. Wellness tourism alone accounted for about US$830 billion of spending in 2023, according to the Global Wellness Institute ¹.

Emissions: a smaller share of a large total

According to WTTC’s Environmental and Social Research, developed with Oxford Economics, travel and tourism produced 7.3% of global greenhouse-gas emissions in 2024, down from 8.3% in 2019, and emissions per dollar of economic contribution fell by 15% over that period ¹⁴. Total sector emissions in 2024 were 9.3% below 2019, and 57.4% of them lay in the supply chain rather than in tourism businesses’ own operations ⁵.

Those figures are not directly comparable with the most-cited academic estimate. In 2018 a team led by Manfred Lenzen of the University of Sydney, writing in Nature Climate Change, put tourism’s carbon footprint at about 8% of global emissions, rising from 3.9 to 4.5 gigatonnes of CO₂-equivalent between 2009 and 2013, and found that it grew “strongly with increased affluence” ⁶. In the Maldives, Mauritius, Cyprus and the Seychelles, international tourism accounted for 30–80% of national emissions ⁶. Methods and boundaries differ, but the implication for destinations is shared. For islands and remote places, the carbon of getting there is a large share of the total, and much of it is counted somewhere other than where its effects are felt.

Where the volume lands

Global totals hide how unevenly visitors are distributed. Eurostat found that in 2023 the ten EU regions receiving the most nights from foreign tourists accounted for 37.6% of all such nights in the EU; three of them, the Canary Islands, Adriatic Croatia and the Balearic Islands, accounted for 16.4% ⁷. Measured against the people who live there, the concentration is sharper. In 2024 the South Aegean recorded 127.2 nights in tourist accommodation per inhabitant and the Ionian Islands 102.6, against an EU average of about 6.7, and Eurostat’s regional data show tourism relative to population concentrated in a limited number of island, coastal and Alpine regions ⁸.

That is the scale at which crowding, housing pressure and water stress are experienced. A 4% rise in global arrivals says little about whether a particular island’s aquifer, a historic centre’s housing stock or a coastal lagoon can absorb its share. It is also the scale at which places have begun to set their own terms, from Hawaiʻi’s Green Fee to the Faroe Islands’ maintenance weekend.

What travellers say

The demand side shows a similar gap between intention and evidence. Booking.com’s 2026 survey of 32,500 travellers in 35 markets found that 85% said sustainable travel matters to them, yet 37% do not trust that options labelled as more sustainable really are ¹⁹. Nearly three-quarters (74%) said they consider extreme-weather risk when choosing a destination or when to travel, and 31% had cancelled or changed a trip in the past year because of extreme weather or natural disasters; 43% planned to avoid overcrowded destinations in 2026 ⁹. Travellers booked 100 million room nights in 2025 at properties with third-party sustainability certification, whose number grew by 22% to about 28,000, and 60% of residents surveyed felt tourism had a positive overall effect where they live ¹⁹.

These are self-reported answers to a booking platform’s survey. They describe attitudes and booking choices, not what happened to the places concerned.

The indicators that exist

Destination-level measurement is not starting from nothing. In March 2024 the UN Statistical Commission adopted the Statistical Framework for Measuring the Sustainability of Tourism, an internationally agreed reference for measuring the economic, social and environmental aspects of tourism, which UN Tourism described as a step “beyond GDP” ¹⁰. Its usefulness to destinations will depend on whether national statistical offices compile it, and whether they do so below national level, where pressure concentrates.

Closer to the ground, UN Tourism’s International Network of Sustainable Tourism Observatories (INSTO), launched in 2004 ¹³, had 46 member destinations when Vienna joined in April 2025 ¹²; observatories monitor 11 mandatory issue areas ¹¹. In Europe, the European Commission’s European Tourism Indicators System (ETIS) offers destinations 43 core indicators, and more than 100 destinations tested it voluntarily during pilot phases. A 2022 study found implementation difficult at sub-national level, mainly for lack of available and up-to-date data, and noted that many indicators can only be sourced through surveys of visitors, residents and businesses ¹⁴.

The tools exist. Consistent, comparable time series for most destinations do not. Forty-six observatories is a small number set against the volumes UN Tourism records each year.

What the numbers cannot show

The Magazine’s reading is that most travellers say sustainability matters, that many distrust the labels, and that the available data mostly cannot show whether a stay leaves a place better off ¹. Aggregate figures describe the scale of the question. Answering it requires measurement place by place and property by property: of residents’ wellbeing, ecosystem condition, local income and the share of visitor spending that stays.

That is the gap this publication works in. Our destination profiles label every initiative by the strength of its evidence, as set out in how we read regeneration claims, for the same reason: volume is easy to count, and value to a place is not.