One of London’s rare Tudor-era buildings is a fate-defying gatehouse for a church.

One of London's lost rivers runs through a pipe over the tracks of this subway station.

A storied London perfume shop that supplies scents for royalty has been operating out of this storefront for nearly 300 years.

London’s first road overpass is so old that it was originally built for horse-drawn carriages.

The niches over the western entrance of Westminster Abbey honor individuals from the 20th century who gave their lives for their Christian beliefs.

This unassuming brick building contains the last purpose-built drill hall in the United Kingdom.

A building claimed to be London’s smallest house has an obscure history.

A living lighting fixture.

These 19th-century gas tanks were remade into an apartment complex.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

This display showcases the culinary equivalent of steel-toe boots during World War I.

The wooden grave marker of a railroad worker who died in a freak whirlwind.

The lion represents a fascinating part of English history, and the story of a man who obsessed over its creation.

Pop culture has helped to keep this iconic British building from being destroyed.

A Mysterious Masonic tomb in San Luis Obispo.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

The unbelievably opulent home built for an infamous newspaperman.

For over 20 years, Lil Toot has delighted guests with narrated boat rides between Stearns Wharf and Santa Barbara Harbor, becoming a beloved local legend and top-rated experience for visitors.

The beautiful behemoth is one of the largest trees of its kind in the United States.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

The smallest museum in Basel, Switzerland, is a two-foot-by-two-foot window in the door of a 600-year-old house.

At first glance, little checkered structures on the hillside look like they house the living, not the dead.

This stone tower was built to protect Crete from incoming pirates.

The first regular high-definition TV transmissions were made from this seemingly out-of-place mast located on one corner of a Victorian-era entertainment venue.