One of the last remnants of an 18th-century fort in the business district of Mumbai.

Mumbai's angel.

Constructed in 1923, this is one of several heritage drinking fountains across Mumbai.

These animal carvings stand as representations of India and Britain.

The place of worship for Zoroastrians, Mumbai's Parsi fire temples use fire and ash for purification.

World's most expensive home.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

Explore the subjective dream of a hotel.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

340-foot statue built to honour the Heroes of the Soviet Union.

Visitors may notice something strange walking through this quaint German town.

One of the newest mosques in a city filled with thousands.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

The most metal church of all time was built in record time because of an international, pious pissing contest.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

A sixth-century Byzantine cistern hidden below a modern carpet store.

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

A meow-velous tribute to a beloved street cat, made famous on the internet.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

A marvel of Byzantine engineering under the streets of Istanbul.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

This 19th-century fountain's namesake animal isn't what you think it is.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

These "anatomical machines" are only one of the many strange items in this Italian crypt.