A remarkable lava formation encloses a line of Buddhist statues that can't be accurately counted, according to local mythology.

See no evil, hear no evil, speak no evil.

Is this cat asleep or just pretending?

These sculptures were created by a 17th-century artist who had never seen an elephant.

Stretching for 22 miles, the world's longest tree-lined avenue dates back to the early 17th-century.

The oldest academic institution in Japan provides a glimpse of university life during the days of the samurai.

One in a pair of subterranean caves created by an ancient eruption of Mount Fuji.

These "mermaids" that surround a plaza in Segovia are rather sphinx-like.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

The site where the poet Matsuo Bashō read one of the first haiku that comprise his famous travelogue.

One of the few surviving World War II-era air-raid shelters in Tokyo.

This infamous execution site inspired the beginning of Japan's modernization in the late 18th-century.

A site where ten to twenty thousand Edo-era prisoners were put to death.

This giant seated Bhudda of Healing dates to the 1780s.

This sawtooth mountain range still bears the strangely lovely marks of its history as a medieval quarry.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Two gilded cherubs perched on a church bell tower have been reminding visitors of the finitude of life since 1760.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.