15. Al-Ula Old Town, Saudi Arabia
Equal parts creepy and fascinating, the abandoned Al-Ula Old Town is an ancient time capsule. Frozen in time since the 1980s, when the last few residents left for a nearby town, Al-Ula’s winding pathways and once-bustling squares were a key route on the spice and silk roads, welcoming traders from all over the Middle East and Europe. However, travellers wanting to visit Al-Ula for its ghost-town vibes should do so soon: it’s currently undergoing careful redevelopment, and may not be abandoned for much longer.
14. Kawah Ijen Volcano, Indonesia
On the Indonesian island of Java lies the world’s largest acidic lake, nestled within the crater of the Kawah Ijen Volcano. Measuring over half a mile wide and 656 feet deep, the lake’s stunning turquoise colour is caused by high sulfuric acid levels. Recognized as part of a UNESCO World Biosphere Reserve in 2016, Kawah Ijen remains an active volcano, with notable eruptions as recently as 2002. Visitors can trek along the crater’s rim, taking in both its beauty and its geological power.
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