Sekai no Fushigi Tanken Series

Documentaries combining anime with live action, exploring a mixed bag of mysteries and historical topics, including the statues of Easter Island, the search for a lost continent, the Bermuda Triangle, the NAZCA Lines, the Sphinx and the Pyramids, the Greenwich Meridian, the Leaning Tower of Pisa, and the Great Buddha of Nara. Confusing in its inability to decide whether it wants to be history, geography, travelogue, or the titular "mysteries."

(Source: The Anime Encyclopedia)