The site poses problems in lateral or logical thinking, from easy to hard, with both hints and answers. Great party conversation and something kids will like.
narrative+history+pictures+encyclopedia; "safe, fast and fun way to learn the real story behind historic events, famous people, heroic exploits, legends, disasters, movies, plus topics of current and general interest"
longstanding and well maintained site by Internet humanities pioneer, George P. Landow. Organized by country and by conceptual approaches. Courses linked to. Useful internal search engine.