In 1990, construction began on the Centro Financiero Confinanzas, a huge high-rise office complex in Caracas, Venezuela. Construction halted in 1994, after a banking crisis and the death of the building's main investor, David Brillembourg. The 45-story tower stood vacant until 2007, when squatters began moving in, displaced by a massive housing shortage in Caracas. Authorities turned a blind eye, and the skyscraper, nicknamed the "Tower of David" (after David Brillembourg), is now home to more than 3,000 residents. The third-highest skyscraper in the country has been jury-rigged with electricity and water up to the 22nd floor. Reuters photographer Jorge Silva spent some time with tower residents earlier this year, returning with these photographs of the world's tallest slum.