Something a wee bit special up next – a beautiful disused Victorian reservoir hidden beneath the heart of London. History Finsbury Park Reservoir, also known by its original name of Hornsey Wood reservoir, was built by the East London Water Works Company between 1868-1869. Lying beneath Finsbury Park, with a capacity of some 5,000,000 gallons, it was used up until the early 21st Century. In 2012 a survey spotted a crack within the brick arches, and the park above it…