A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

One of the largest ochre quarries in the world, hidden in a limestone landscape.

This stone memorial commemorates a group of French patriots slain by French fascists.

An abandoned anti-smuggling station decays along the boundary between Portugal and Spain.

This crumbling Portuguese ruin overlooks the populace it once ruled.

The ruins of a 16th-century bridge loom over Olivença's sovereignty.

This star-shaped military outpost is now simply trying to protect itself from neglect.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

The great polar explorer is remembered in this far northern town, where he embarked on his final expedition.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

This massive complex is made up of hundreds of smaller temples that date back to the ninth century.

Hundreds of Buddhas in a re-discovered Indonesian temple.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

Ho Chi Minh's perfectly preserved body has been on display here since 1975.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

This restored eighth-century palace is a shining example of ancient Umayyad architecture.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

The most gigantic, swoony, intimidating trio of fingers in all of antiquity.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

The world's oldest map of the holy land gives us a fragmented glimpse of the layout of biblical nations.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.