This unattributed sculpture in Amsterdam is hiding in plain sight.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

A black cat protests the City Guild in Riga's Old Town.

This enigmatic artifact remained buried in a churchyard for years.

An abstract monument to a symphonic composer.

Time stands still at this serene burial ground in the center of Budapest.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

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

A mocking tribute to the past and modern leadership of Prague.

Monument to a suicide protesting the Soviet invasion.