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

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Beachcombers have been populating this museum with artifacts ranging from prehistoric to barely historic since the 1930's.

A statue paying homage to a world-record-setting aviator who disappeared under mysterious circumstances.

This studio was home to David Bowie's first single, even if it did turn away the Beatles.

London's Victorian Tower of Babel.

A 150-year-old steam locomotive crosses the southern half of the island daily.

World's largest working waterwheel has been around for over 150 years.

This hidden bridge is where local children leave gifts and messages for the island's fay folk.

The world's largest grapevine has produced a delicious harvest at Hampton Court Palace for almost 250 years.

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

An ornate and disused early 20th-century building has been given new life as a fully operational structure, complete with offices, oyster bar, and a furniture retailer.

The bones of two medieval royal lions were discovered at the historic fortress.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

The commemorative stone column conceals a secret laboratory.

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

The ritual has been performed uninterrupted for nearly 700 years.

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

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

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

A Roman spa buried deep beneath the City of London.

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