Crystal Palace Underground Greeting Card. South London Greeting Cards. Built in 1865, the Crystal Palace subway boasts of stunning Victorian orange- cream brickwork giving it a feeling of a maze-like Byzantinian crypt. Truly one of the hidden treasures in South London. The entrance is quite unassuming and does nothing to revel of what lies beneath.Merely a stones throw away from where I live, this was a recent discovery when I moved to the area. Birthday, anniversary, housewarming or Christmas- these colourful cards celebrating London's unique architecture and cultural curiosities will be well loved and cherished. Size: A6 Printed in brilliant full colour, onto a 300gsm coated stock and uncoated inside for easy writing. Kraft envelope included.