The hottest place on the planet.

Ethiopia's "smoking mountain" is in one of the hottest regions on the planet and is home to two lava lakes.

An ancient Ethiopian cave church is endangered by the simple building of a road.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

An ocean in the making, in the Ethiopian desert.

Ethiopian standing stones featuring remarkably preserved carvings of swords and people.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

One of the largest collections of traditional Māori artifacts in New Zealand.

Made of 41,900 pieces of mosaic, it took two years to piece together this giant egg.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

The gargoyles and grotesques of the 21st century are here—22 emoji built into a new building in the Netherlands.

This enormous storm barrier is one of the largest moving structures on Earth, with each arm taller than the Washington Monument.

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

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

Colorful and chaotic stacked hotel in North Holland.

The place where Czar Peter I of Russia resided in 1697 during his Grand Embassy.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

A unique collection of gilded age mechanical pianos.

The attic of a four-century-old canal house hides a clandestine church.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.