A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

Ancient serpentine sacrifice holder that has stood the test of time.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

Turkish adventurer antiques in the heart of the Grand Bazaar.

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

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

One of Europe's oldest libraries.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

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

This crumbling folly looks like an enchanted left over from Middle Earth.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A cluttered and astounding collection of antiquities and curiosities.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

Remnants of a Victorian garden feature sitting in public woodland.

Ruins of a German Castle on top of a towering stone pillar.

Two stunning 17th-century libraries and a cabinet of curiosities.

A small town Romanian cemetery filled with darkly humorous gravestones.

Beijing's expansive subterranean hiding spot now crumbles away as a tourist destination.

Numerical symbolism abound at East Asia's oldest observatory.

Centuries-old bridges grown from tangled roots.