A marvel of Byzantine engineering under the streets of Istanbul.

The Uros people live on floating reed islands in lake Titicaca.

An unexpected desert oasis in South America.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

An Archaeological Wonder of Peru, and the largest stone ruin site in the New World.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

Massive volcano in the Andes is the farthest point from earth's center.

Natural arch offers panoramic views of Yangshuo's karst hills.

Bridge that died in war and was resurected.

Oriental bazaar in the heart of Sarajevo.

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

Scattered throughout London are ancient remnants of the city's former bounding wall.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

One part local history, 99 parts gruesome haunted house.

Used as an example in one of the first dictionary entries for "museum" in 1706.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

One of Europe's oldest libraries.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.