Quinta da Regaleira is a stunning estate located in Sintra, Portugal. Built in the late 19th century, it features a unique blend of Gothic, Manueline, and Renaissance architectural styles. The estate is surrounded by lush gardens, mysterious tunnels, and enchanting structures, making it a popular destination for visitors. One of the most notable features of Quinta da Regaleira is the Initiation Well, a deep, spiral staircase that descends into the earth. This well is often associated with Freemasonry and symbolizes the journey of enlightenment. The estate is a UNESCO World Heritage site, recognized for its cultural significance and natural beauty.