Close to the Tokyo Tower, between the Daitoku-in Mausoleum Somon Gate and the Prince Park Tower Hotel, there’s a green park, completely covered by trees.

Although it impossible to clearly see it, this is Maruyama Kofun, one of the famous Japanese Kofun megalithic keyhole-shaped mound tombs, zempō-kōen-fun 「前方後円墳」. With a length of more than 100 meters, this is the largest such tomb from Tokyo, estimated to be older than 1500 years.

Maruyama Kofun, View from Tokyo Tower

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Yesterday’s Japan Photo: A one-of-a-kind construction, Otenmon, replica of a 1200 years old gate