This iconic high-rise residential block was one of the last to be built in the Brutalist style.

This toxic spoil heap found a second life as a ski slope, popular film location, and wildlife haven.

The plunge pool is a surviving relic of a rowdy royal residence.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

The townhouse where the English poet created some of his most influential work has been preserved in tribute.

The cedar tree in Highgate Cemetery earned its title by accident.

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

A network of concealed passageways lies within a busy London Underground station.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

A historic arboretum and non-conformist, non-denominational park cemetery.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

The remains of Crystal Palace Great Exhibition of 1851.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A student driver's nightmare.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

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

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.