It was on 9-9-9 that His Highness Sheikh Mohammed Bin Rashid Al Maktoum, Vice-President and Prime Minister of the UAE and Ruler of Dubai launched the Dubai Metro.
At the edge of an ancient lava flow where jagged black rocks meet the Pacific, small off-the-grid homes overlook the calm blue waters of Papa Bay on Hawaii's Big Island - no tourists or hotels in sight. Here, one of the islands' most abundant and vibrant coral reefs thrives just below the surface.
Genex Tower is unmissable on the highway from Belgrade airport to the centre of the city.
Weary after a day's work on the water, Albanian fisherman Ilir Neziri peers down with disappointment at his small haul of carp from Shkodra, the largest lake in southern Europe.
Perched at an altitude of 2,150 metres, the statues are part of a temple and tomb complex that King Antiochus I, of the ancient Commagene kingdom built as a monument to himself.
The Tembe indigenous people of Brazil's Amazon rainforest for generations have painted their bodies for rites of passage, weddings and to symbolize that they're ready for war.
As their classmates set off to play after school each day, nine-year-old Sakshi Garud and her neighbour Siddharth Dhage, 10, are among a small group of children who take a 14-km (9 miles) return train journey from their village in India to fetch water.
Elon Musk has unveiled a SpaceX spacecraft designed to carry a crew and cargo to the moon, Mars or anywhere else in the solar system and land back on Earth perpendicularly.
Rome is trying to become more environmentally friendly by offering free metro tickets to travellers who re-cycle plastic bottles using machines set up in three of the Italian capital's stations.
Everton Simpson squints at the Caribbean from his motorboat, scanning the dazzling bands of color for hints of what lies beneath. Emerald green indicates sandy bottoms. Sapphire blue lies above seagrass meadows. And deep indigo marks coral reefs. That's where he's headed.