Andrew Emond, a Montreal-based photographer, amateur geographer, and DIY gonzo spelunker of the city's sewers and lost rivers, has just re-launched his excellent website, Under Montreal. The revamped site now comes complete with a fascinating, interactive map of the city's subterranean streams, documenting Montreal's…
Civil engineer William Lyttle was known as the "Mole Man of Hackney" after spending 40 years digging a network tunnels beneath his home. Now Lyttle's property is up for sale, although with considerably fewer tunnels.
While other cities grow by building out or up, Hong Kong is looking to increase its usable space by building down. An urban planning initiative is exploring the possibility of burying some of the city's more unsightly facilities underground, freeing the above-ground land for future development.