This massive circular sculpture may not be a portal to other worlds, but it does inspire the mind to imagine them.

This 30-foot-high statue of Christ was intended to be part of a prehistoric theme park.

A popular photo spot showcasing the remains of a historic building.

A 30-foot neon sign that embraces community togetherness.

A $600,000 pile of stainless steel balls makes for some rather divisive public art.

A giant map of western Canada laid out in rocks

Museum of stuffed gophers set up in various scenes.

This is where all crows in the surrounding region come to roost from the entire Lower Mainland of Vancouver.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

An advertising mural tempering the behavior of Charleston’s children since the late 1800s.

This striking sculpture was created in memory of enslaved people, acknowledging that the city of Bordeaux was France’s second-largest slave-trade port.

Across Valencia lie the remains of three ancient fortifications built centuries apart: a Roman enclosure, an Islamic expansion, and a medieval Christian wall.

A unique shopping and dining park created from old shipping containers and filled with local businesses.

A massive sculpture of an obscure Celtic coin that has become a symbol in Slovakia.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

Hungarian Jews were ghettoized during the Second World War, but little remains of the original wall that closed the Jewish people off from the rest of the city.

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

The metal leaves on this tree are engraved with the names of Holocaust victims.

This sculpture honors the man who was known as the "Righteous Among the Nations."

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.