Time-sensitive experiences and destinations on a clock.
Some destinations have expiration dates. Glaciers melt on a measurable timeline. Certain events happen once or within a specific window. Some cities are restricting tourism before capacity becomes unsustainable. These ten experiences exist in a finite window — visit them within the next 1–3 years or the experience changes fundamentally, disappears, or becomes impossible. It's not fearmongering; it's pragmatism. Nature and human choice both create deadlines.
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