A plaque marks the underground site of one of London's "lost rivers."

The grounds of this Jacobean estate contain one of the oldest mulberry trees in England.

The commemorative stone column conceals a secret laboratory.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

The ritual has been performed uninterrupted for nearly 700 years.

Murals of the wild parties once held on the frozen River Thames.

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

The collection contains over 25,000 items and details the painful dental practices of the past.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

A Victorian school for poverty stricken waifs has been preserved as a museum to their donated education.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

This overlooked street light once served as a KGB dead letter box.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

The last four extravagant street signs of London's historic banking street.

The remains of the great moral philosopher reside in a university in London.

The Florence Nightingale Museum is home to the famous nurse's most treasured possession: her beloved pet owl.

A museum wholly devoted to juvenescence.

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

Explore nearly 400 years of English middle-class home life.