The Reykjavík Museum of Photography in Iceland is a treasure trove of about five million photographs spanning from the 1870s to today, capturing everything from studio portraits to landscapes. Originally starting as a private collection in 1981, the museum now showcases the cultural significance of photography through various exhibitions and activities. Visitors can explore works by renowned photographers like Henri Cartier-Bresson and Mary Ellen Mark, making it a must-visit spot for photography enthusiasts and history buffs alike.