Chestnut blossoms in startling pink

The streets of Toronto will soon be decorated with the blossoms of the Horse Chestnut (genus Aesculus for purists). But seldom if ever are seen the pink blossom trees so common in Central Europe. These are in Vienna. For those who care to know, Wikipedia offers this. The genus “comprises 13-19 species of woody trees and shrubs native to the temperate northern hemisphere, with 6 species native to North America and 7-13 species native to Eurasia; there are also several hybrids. Species are deciduous or evergreen.”