Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

This chimerical bridge/tunnel appears to dead end right into the sea.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

Long before ultrasounds and modern testing, medical specimens like these conjoined twins helped physicians learn about congenital anomalies.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

Roman ruins top white travertine terraces formed by ancient hot springs.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

This famous city eluded concrete detection until the early 2000's.

The ancient latrines of the Greeks, in all their public glory.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Pompeii's less famous neighbor is still revealing her secrets.

Elaborate tile work in this railway station tells the story of Portugal.