As any avid urban explorer would know, one of the more interesting (and Instagram-able) spots in this urban jungle is Singapore's hidden alleyways in the city — remnants of our days when a significant portion of the population lived in shophouses.
The more visually attractive aspects of our unseen back alleys? The hidden doors leading into the premises, of course. Colourful, vibrant, and more often than not, unique from each other, the narrow doors drip with nostalgia, all cracked and withered from the effects of time.
Like us, Singaporean photographer Ricky Gui is fascinated with the doors that litter the city's back lanes — so much so that he embarked on a project documenting their images. Appropriately called "Hidden Door", he compiled close to 600 doors as a "memory of the past and present for someone and future to the unknown".