Gustave Eiffel's masterpiece until the Eiffel Tower was built.

The oldest hotel in Nevada.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

A small stone boy mischievously turns his backside toward the city’s most famous water carrier.

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

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

Abandoned railway line circling the city of Paris.

Drink wine handed out through a window as part of an age-old tradition.

These ruins of a Soviet children's railway station have a haunted atmosphere.

Huge stairway leads to this massive gallery.

Destruction from Armenia's 1988 earthquake inspired an artist's sculptures of scrap metal.

Armenia's premier center of astrophysical research was established during the Soviet era.

Giant stone letters dedicated to the founder of Armenia's alphabet.

This series of Armenian caves held the oldest brain, shoe, and winery in the world.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

A geological oddity topped with a 2,000-year-old pagan temple.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Above the heads of passersby stands a small statue commemorating soldiers from the Boer War.

A beautifully rebuilt windmill from the 17th century, situated along the Amstel River.

A unique work of automotive art calls this shopping center home.

Europe's official "zero-level," the equator of elevation.

A set of seven houses, each built in a style that represents a European country.