
Axel Pettersson, CC BY 4.0, via Wikimedia Commons
Kiruna is the world’s largest underground iron-ore mine, operated by LKAB since the early 20th century. It extracts magnetite ore using high-tech block caving and remote-controlled equipment, with mining advancing down to the 1,365 m level. The Visitor Mine, located at level 540 m, includes 20,000 m² of underground exhibition space—complete with full-scale machinery, historical mining artefacts, film displays, and geology exhibits. The site offers in situ insight into modern deep-level mining, with driverless trains, heavy loaders, and advanced tunnel engineering. It also highlights the technological and social challenge of relocating the city as mining progresses—a rare case where urban infrastructure adapts around active industrial systems.
Open year-round; tours operate daily throughout the year with pre-booking required. Visitors are picked up by bus from Kiruna tourist centre and descend 540 m underground to the exhibition mine staffed by expert guides. Tours last about 90–120 minutes, suited to ages 6 and up. Highlights include walkthroughs among mining machinery, geology formations, ore-handling systems, and discussion on rock-subsidence and town relocation. Group sizes are capped; tickets must be paid in advance. Photography is allowed in public spaces. The centre has accessible parking, basic restrooms, and a small museum shop. Visitors should wear sturdy footwear and moderate clothing, as underground temperatures are low. This tour offers a rare opportunity to witness large-scale working infrastructure deep beneath an evolving city.
Type:Mine
Visitability:Visitable
Address:Malmvägen 9B, 981 30 Kiruna, Sweden
Website:Visit

Photo by Sian Bentley-Magee on Unsplash
Windermere Wastewater Treatment Works treats local sewage using sedimentation, activated sludge, and sludge digestion, forming part of a £200 million upgrade to protect the lake. United Utilities offers 90‑minute guided tours for small groups (age 9+), providing PPE and expert insight into treatment stages, environmental safeguards, and future filtration innovations.

Photo by Sian Bentley-Magee on Unsplash
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David Samuel, User:Hellodavey1902, CC BY-SA 3.0, via Wikimedia Commons
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