An art museum dedicated to the sculptor Barbara Hepworth, but it is by no means restricted to her work.

The ruins stand as a somber reminder of France’s worst civil catastrophe of the 20th century.

This mosque was based on Sub-Saharan Islamic architecture and created for the Senegalese Tirailleurs.

A fortress on this island housed the mysterious prisoner known as the "Man in the Iron Mask" for more than a decade.

Balconies that have a most unusual accent.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

These remarkable cascades are the jewels of Upper Tees.

This memorial depicts the unlikely team that won England the Sir Thomas Lipton Trophy.

This industrial chimney looks rather out of place, isolated in the middle of an attractive woodland.

This Victorian footbridge over the River Tees was originally built to carry water from the high moorland to the industrial towns on the coast.

This building was once a town hall, a fire station, a prison, a dairy market, and the target for two marksmen.

This park and coal mine heritage site is home to two of the last steam winding engines in the UK.

One of the earliest large-scale "hyper" roofs in the U.K. is now a derelict roadside attraction.

A unique tribute to the chocolatey past that helped shape one British city.

This collection of ancient structures makes up part of the largest group of prehistoric earthworks in Britain.

The pyramid-shaped grave of one of the first mountain astronomers and a pyramid theorist.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

This former railway station is now an impressive cultural and retail centre and a magnet for railroad history fans

The church and nearby castle are all that remains of a medieval village, mysteriously abandoned.

A vintage fire engine is hidden inside this World War I-era water tower.

Artists have long been drawn to these atmospheric 12th-century ruins.

In the 19th century, this pit housed a fully grown black bear for the entertainment of visitors. Today there is a sculpture in tribute to the poor creature.

A beloved family of panda sculptures named after memories of the city's past.

A marvel of Byzantine engineering under the streets of Istanbul.