Connect the dots to reveal how a devastating blizzard and Thomas Edison are responsible for New York’s iconic steaming manholes. Then uncover the connections between some huge rock piles, the city’s grid system, and its famous skyline.

Explore the wild tales behind this storied city, stopping at an apartment block the CIA used for a bizarre secret experiment involving hippies and the Summer of Love. Then wander the Castro, where an assassination changed the iconic LGTBQ+ flag.

Unearth the regal history hiding in a clock near Buckingham Palace, and discover how an ordinary street lamp helped solve the city’s sewage problem and led to the construction of the famous London Underground.

Immerse yourself in the Roaring Twenties inside a hidden art deco grocery store that was once an LGBTQ+ club and a secret Nazi hangout. Then learn how the city’s most popular street food, currywurst, emerged from the ruins of the Second World War.

Walk the cobblestone streets and take in the city’s urban design to uncover the key to its revolutionary past. Then discover why tourists should skip the Eiffel Tower and climb the ugliest skyscraper in Europe instead.

Get the inside scoop on a Michelin-star meal that’s less than three dollars, and learn the amazing history of hawker food. Then get a personal tour from “Toilet Man” to learn how beautiful gardens and obsessively clean toilets made the city rich.