For someone who loves to travel and explore new places, why not build a “Visitor Guide To” everything? Build your blog as a perfect destination visitor guide with travel tips, city maps/guides, reviews of hotels and restaurants, recommendations etc. Most of this blog can be driven by your own travel experiences. This is a highly profitable blog niche, and the sky is the limit if you can make it a comprehensive visitor guide for any destination.
Do have a look at the operations of Lonely Planet or TripAdvisor and get inspired to build large followings by offering travel information and advice.
Blog Name Idea: VisitorGuideTo.com