Flamboyant architecture from the turn of 20th century.

Ever-growing collection of devils in art.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

A small granite monument marks where the borders of three countries meet.

The two abandoned overpasses are among the largest bridges in Poland.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

At night, this memorial illuminates a ghostly outline of a footbridge that connected two sections of the Warsaw Ghetto.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A statue honors the children who fought Nazis in Poland.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

A bigger-than-life pun that has become a beacon of altruism.

A few iconic structures are all that remain of America’s first outdoor shopping mall.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

This serene oasis in an affluent Los Angeles neighborhood holds some of Gandhi's ashes and got Elvis into Eastern Philosophy.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

A celebration of Colombia’s premier contemporary artist.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.