St. Basil's Cathedral is a famous church located in Moscow, Russia. Built between 1555 and 1561, it was commissioned by Ivan the Terrible to commemorate the capture of Kazan. The cathedral is known for its unique architecture, featuring colorful onion-shaped domes and intricate designs that make it one of the most recognizable landmarks in the world. The cathedral is part of the Moscow Kremlin and is a UNESCO World Heritage Site. It serves as a museum today, showcasing the rich history and culture of Russia. Visitors can explore its beautiful interiors and learn about its significance in Russian history and architecture.