🇬🇧 Albert Ball, fighter pilot credited with 44 aerial victories. At the time he was shot down in 1917, he was Britain's top WWI ace.

Morning view from the heights of Madeira Island, Portugal.

A Navajo woman outside her hogan, 1910s-1920s, original autochrome colour photo

A great concept for an electromagnetic levitation module.

Underwater, tupic seabirds are no different from regular seabirds - they swim as if they were flying through the air.

🇸🇪 Midsummer celebration in Sweden, June 1952

🎈 This is how balloons take off.

The maximum height to which it can lift you is 5km. the shell with the basket and all the equipment weighs 400-500kg, plus passengers.

15th century illustration of the Battle of Laupen fought between Swiss forces and an army of the Dukes of Savoy, 21 June 1339

Zhangjiajie National Forest Park, China.

Two Jewish girls on a beach in Tunis, Tunisia, c. 1890s

Bored man creates circular pattern while walking in snow.

Cottages in Ireland, c. 1910s (original autochrome colour photo)

Salar de Uyuni salt marsh in Bolivia

Arrival of Siamese King Mongkut at the Buddhist temple of Wat Pho, 1865

The cheetah had only to be distracted for a few seconds as the vultures took advantage of this.

Sara Forbes Bonetta, ward and goddaughter of Queen Victoria, 1862. She was a princess of the Egbado clan of the Yoruba people in West Africa, who was orphaned during a war with the nearby Kingdom of Dahomey as a child, and was later enslaved by King Ghezo of Dahomey. She was given as a "gift" to Captain Frederick E. Forbes of the British Royal Navy and later became a goddaughter of Queen Victoria.

Icon Of The Seas, The Largest Cruise Ship Ever, at 365 meters long

A captured German Taube monoplane, on display in the courtyard of Les Invalides in Paris, in 1915. The Taube was a pre-World War I aircraft, only briefly used on the front lines, replaced later by newer designs.

I've never seen a practical application of the greedy cup.