Liechtenstein has no UNESCO sites, but from Vaduz you can reach prehistoric Lake Constance pile dwellings (70 km) and the Swiss Tectonic Arena Sardona (60 km) in under an hour.

Andorra has no UNESCO sites, but the Catalan Romanesque Churches of the Vall de Boí lie 100 km southwest and the Pyrenees-Mont Perdu landscape 200 km east — both reachable as day trips.

San Marino is itself a UNESCO World Heritage Site — the medieval centre and three summit towers of Monte Titano, seat of the world’s oldest surviving constitutional republic, inscribed in 2008.

From Astana, reach two UNESCO World Heritage Sites: the Timurid Mausoleum of Khoja Ahmed Yasawi at Turkestan (1 hr flight) and the Saryarka flamingo steppe (3 hr drive).

Belize’s UNESCO Barrier Reef Reserve System — the Northern Hemisphere’s largest reef, including the Great Blue Hole and seasonal whale shark sites — is reachable from Belmopan within 2 hours.

El Salvador’s only UNESCO World Heritage Site, Joya de Cerén, preserves a Maya farming village complete with thatched roofs, food stores, and planted gardens — buried under volcanic ash around 600 AD, 36 km from San Salvador.

Guyana has no UNESCO sites, but Kaieteur Falls — the world’s largest single-drop waterfall by volume — is accessible by 90-minute light aircraft from Georgetown.

Trinidad has no UNESCO World Heritage Sites, but the Pitch Lake at La Brea — the world’s largest natural asphalt deposit, known since Sir Walter Raleigh’s 1595 visit — sits 50 km from Port of Spain.

The Bahamas has no UNESCO World Heritage Sites, but offers Columbus’s 1492 landfall site on San Salvador and the world’s third-longest barrier reef off Andros — both within reach of Nassau.

Barbados’s only UNESCO World Heritage Site covers colonial Bridgetown — with its pre-London Nelson’s Column — and the Garrison, home to the world’s largest collection of 17th-century iron cannon.