Largest necropolis in the Mediterranean.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

The charred, dead skeleton of an oak tree is said to have consoled a dying 16th-century Italian poet.

This hidden alley near the location of Rome's first theater was the site of a curious miracle.

Plaques on its facade commemorate the Tiber's most destructive deluges.

A massive marble foot is tucked away in a small alley near the Pantheon.

Shakespeare has been brought to life in this open air theater for the better part of a century.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

This 22-acre botanical garden is home to the largest collection of rhododendrons in the world.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Finland's oldest astronomical observatory once played a crucial role in seafaring and timekeeping.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

A series of playful yellow penguins share a serious message about the environment.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Looming communist pillar with a Czech twist.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”