The Propylaea is the monumental entrance to the ancient city of Baalbek, located in the Bekaa Valley in Lebanon. This remarkable gateway serves as the grand entry to one of the most important and impressive Roman temple complexes in the Middle East. Erected during the reign of the Emperor Nero in the 1st century AD, the Propylaea stands at the western end of the Great Court of Baalbek and leads to the massive temple of Jupiter. It originally featured a grand staircase and was adorned with rich architectural elements such as columns, pilasters, and elaborate carvings that reflect the significance of Baalbek as a religious and cultural center. Over time, the structure has endured damage due to natural degradation and historical conflicts, yet it continues to emanate grandeur and a sense of ancient glory. It's part of a larger archaeological site, which also includes the temples of Bacchus and Venus, making the entire Baalbek complex a UNESCO World Heritage Site noted for its spectacular Roman imperial architecture.