Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Four antique Baldwin trains are kept on display in the Mal Tiempo train depot.

An office built to look like a giant basket.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

A miniature world of concrete and stone in Springfield, Ohio.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

Where beautiful signs live on forever.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

Five candy-colored villages on the Italian Riviera.

Go inside to really appreciate this 500-year-old technological masterpiece.

2300-year-old Roman road connecting the empire.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

A massive Montreal stadium that has seen nothing but trouble since its inception.

Two thirds of this Montreal neon icon has survived to flash another day.

A contemporary fresco movement illustrates the region's rich history.

Futuristic apartment blocks are the backdrop for Montreal surfers hangin' ten on the Habitat '67 standing wave.

The biggest museum dedicated to insects in North America, one of the largest in the world.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.