Tourism often puts pressure on natural resources through over-consumption, often in places where resources are already scarce. Tourism puts enormous stress on local land use, and can lead to soil erosion, increased pollution, natural habitat loss, and more pressure on endangered species.

In 2026, the single biggest problem with tourism is Overtourism, a phenomenon where the sheer volume of visitors exceeds the "carrying capacity" of a destination, leading to the degradation of local life and infrastructure. This manifests as a "Sustainability Paradox": the very beauty that draws tourists is destroyed by the crowds that come to see it. Overtourism drives up housing costs, as apartments are converted into short-term rentals, effectively "pricing out" the locals who make the destination culturally vibrant. It also strains fragile ecosystems—like the coral reefs in Hawaii or the permafrost in Antarctica—and leads to "Instagram-tourism," where visitors flock to a single spot for a photo, causing massive congestion without contributing meaningfully to the local economy. Governments are now fighting back with visitor caps, "Tourist Taxes," and even "No-Go" lists to protect their heritage. The resulting "backlash" can create a hostile environment where residents view travelers as a burden rather than guests, turning a mutually beneficial exchange into a source of deep-seated social and political tension.