This incredibly diverse research station is one of the largest tropical botanical gardens in the world.

What was once supposed to be the symbol of a shining Afghan future is now a bombed-out ruin.

A strip of neutral ground where the people of Tajikistan and Afghanistan come together to trade.

Rock-cut chamber at top of an outcroup, reached by a mountain stairway of forty steps.

An abandoned swimming pool decays on the outskirts of Berlin.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

A museum specifically dedicated to the Trabant, one of the iconic automobiles of the GDR.

The site where a plot to assassinate Hitler was planned—and its conspirators were executed—is now a powerful memorial to the German resistance during World War II.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

A historic fire call point.

A memorial for military police dogs in the former U.S. air base.

This impressive gate is the only remaining remnant of a Spanish naval station.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

Only a few pieces remain of a grand 16th-century water clock that once announced the changing hours with the sound of bells, gongs, and drums.

A pair of oily black spiders lurk inside South Korea's largest airport.

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

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

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

This house covered in art created with volcanic rocks is shrouded in macabre lore.

This colorful gate stands as an entrance to the walled city of Old San Juan.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

This small fort played a huge role defending Puerto Rico’s capital city.

The crumbling remnants of this 19th-century quarantine hospital hint at the touristy island's darker past.

These red and black houses were awarded to the firefighters who saved their city from an enormous blaze.