This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

The angel of death appears to weep black tears at this grave marker.

This forgotten boat elevator was an engineering marvel in its heyday.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

An acoustic anomaly with a mysterious cause.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

The anatomical-pathological collection of a man who changed surgery.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Residential building on the Regents Canal is a breeding ground for creativity and innovation.

Hidden beneath the streets of London is a secret subway that only carried mail.

Giant, friendly pelicans in Central London, the most unlikely of places.

London's smallest police station is barely the size of a phone booth.