Dating all the way back to 1299, this medieval castle has a rich history as a royal residence. It transformed into a formidable fortress in 1592 before being reborn as a Renaissance castle between 1637 and 1648. Nestled in the heart of Oslo, it offers visitors a fascinating glimpse into Norway's past with its impressive architecture and storied walls. Strolling through its courtyards, you can almost hear the echoes of history whispering tales of knights and nobility. The castle also hosts various events and exhibitions, making it a lively spot for both locals and tourists. Whether you're a history buff or just someone who appreciates stunning views, this castle is sure to captivate your imagination.