Sentinels of the sea. Lighthouses have been around for a while. A long, long time, actually. One of the Seven Wonders of the Ancient World was the Lighthouse of Alexandria in Egypt, completed around 246 BC. Since then, they’ve been protecting sailors around the world, evolving from simple fires atop a hill to sturdy structures that can withstand the fiercest weather and are equipped with powerful modern technology. Critically important, and fun to visit, lighthouses have long fascinated me with their relevance, their loneliness, and their unique beauty. Read about the top five lighthouses >