An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

In Stone Town, Zanzibar, the city’s culture and history is told through its doors.

This slowly crumbling mansion was home to one of East Africa's richest and most powerful slave traders.

Freddie Mercury's childhood home is now a monument to the iconic Queen rockstar.

After sunset the heart of Zanzibar's historic Stone Town neighborhood transforms into a culinary playground.

Sitting atop a rock on Michamvi Pingwe beach, this restaurant becomes its own island at high tide.

A neglected bell tower in modern Colombo is a symbol of the city's colonial past.

This fort dates back to 1588 and was colonized by the Portuguese, Dutch, and English and sits prominently on the Indian Ocean where azure water lap the coast.

This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.

To gaze upon the visage of Sri Lanka's biggest Buddha, one must first pass through the Tunnel of Hell.

Pettah's beautiful floating market was once a stinky canal in a sketchy industrial area.

Known as the most scenic route in Sri Lanka, this train line is steeped in history and offers an unparalleled view of the country.

This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

An ancient stone fortress considered by many to be the eighth wonder of the world.

An exquisite Baroque church in Vienna's old town.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Legends surround an ancient tree trunk riddled with nails for good luck.

Baroque celebration of the end of the Great Plague of Vienna.

A silly medieval mural preserved on the side of a Viennese house.

Op-art architecture designed for happiness.