This mysterious medieval grotto holds a grid of sacred wells of unknown purpose.

Access to this hidden site of a 14th-century mass suicide is prohibited, unless it is to pray for the dead.

The alleged site of the months-long imprisonment of a Japanese prince.

Associated with Japanese folklore's most eminent sorcerer, this slab of rock is said to be both a blessing and a curse.

No one knows why this family’s graves stayed on the national museum's premises after all other tombstones were relocated.

This strange mural located in the Ueno station is filled with traditional Japanese symbolism.

Unbeknownst to many, an ancient burial mound hides in plain sight in Ueno Park.

This site commemorates the life of a Japanese scientist who dedicated his life to the discovery of diseases.

Overlooked by many, this tiny sacred island in Ueno Park only opens to the public every 12 days.

A painting marks the site of a historic skyscraper destroyed by the Great Kantō earthquake.

A mysterious, perhaps haunted plot of land, untouched by modern development.

An unassuming set of tiles next to a mailbox mark the former location of one of the most famous springs in the city.

A mountaintop shrine-temple guarded by a horde of half-demon priests.

Over 80 years old, this hand-dug tunnel is a Chinese-style portal to another world.

The legendary Japanese filmmaker’s tombstone is marked by a single letter meaning “nothing," and bottles of sake.

Only the face remains of this giant Buddha statue, which is said to be a source of luck for students.

Take a few seconds to look at this abandoned, art-filled station as you pass by on the subway to Ueno.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

Remnants of an old bank adorn this station's brick wall.

The man who created the first Japanese-English Dictionary.

The Port of Yokohama’s customs headquarters building resembles a Moorish kasbah, complete with a minaret.

Once upon a time in Kamakura, a five-headed dragon fell in love with an Indian water goddess.

A major Japanese execution ground site from the Middle Ages.

At the time of its construction, this type of door was nearly unheard of.