A tiny Greek Orthodox church from the Ottoman era hides on a busy city street.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

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

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

Every inch of this chapel is covered in craftsmanship from across the world.

Thousands of well-dressed mummies below a monastery.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

The pockmarks across the building's facade are remnants of the Blitz.

An architectural oddity hides in plain sight on this iconic London bridge.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

This luxury shopping lane has been protected by its own tiny police force for over a century.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

An artistic tribute to the famous singer, just around the corner from where he was born.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Hear the quietest sound from across the dome.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.