They took a handful of Floo powder, each lined up in a row before the fireplace and threw it in on their turn after stepping in, shouting "Diagon Alley!"

Tapping just the right brick in the wall behind the Leaky Cauldron pub in London ("Three up...two across...") will reveal an archway which is a portal into Diagon Alley, a long cobbled street where is to be found a strange and exciting assortment of shops and restaurants, some of which have tables outside with brightly colored umbrellas.
Diagon Alley is fairly large. There are a large number of shops of many varieties. Witches and wizards travel to Diagon Alley from all over Britain to spend the day shopping.
Here in Diagon Alley, one can find an assortment of items, including:
-Animals [Cats, owls {Tawny, screech, barn, brown, and snowy], toads, etc.]-
-Barrels of bat's spleens and eel's eyes.-
-Barrels of slimy stuff.-
-Black beetle eyes.-
-Books [Leather-bound books the size of paving slabs, books the size of postage stamps in covers of silk, books full of peculiar symbols, books with nothing in them at all, piles of spell books, etc.]-
-Broomsticks [Firebolt, Nimbus 2000, etc.]-
-Cauldrons [Brass, copper, gold, pewter, silver].-
-Snarled claws.-
-Dragon liver.-
-Strings of fangs.-
-Bundles of feathers.-
-Globes of the moon.-
-Gobstones made of solid gold.-
-Jars of herbs.-
-Ice cream [Chocolate and rasberry with chopped nuts, sundaes {free on the half-hour}, strawberry and peanut butter, etc.]-
-Ink that changes color as you write.-
-Lunascope.-
-Perfect, moving model of the galaxy in a glass ball.-
-Rolls of parchment.-
-Potion bottles.-
-Bright powders.-
-Quills.-
-Rat tonic.-
-Robes [Hogwarts school robes, Chudley Cannons robes, spangled, self-ironing, beautifying, slimming, fattening, lengthening, temperature-adjusting, plain {free frog-skin belt with every purchase}].-
-Dried roots.-
-Scales for weighing potion ingredients.-
-Strange, silver scientific instruments.-
-Telescopes [Including collapsible brass].-
-Silver unicorn horns.-
-Wands.-
Near Gringotts is a sidestreet called Knockturn Alley where are to be found shops dealing with the Dark Arts.

Tapping just the right brick in the wall behind the Leaky Cauldron pub in London ("Three up...two across...") will reveal an archway which is a portal into Diagon Alley, a long cobbled street where is to be found a strange and exciting assortment of shops and restaurants, some of which have tables outside with brightly colored umbrellas.
Diagon Alley is fairly large. There are a large number of shops of many varieties. Witches and wizards travel to Diagon Alley from all over Britain to spend the day shopping.
Here in Diagon Alley, one can find an assortment of items, including:
-Animals [Cats, owls {Tawny, screech, barn, brown, and snowy], toads, etc.]-
-Barrels of bat's spleens and eel's eyes.-
-Barrels of slimy stuff.-
-Black beetle eyes.-
-Books [Leather-bound books the size of paving slabs, books the size of postage stamps in covers of silk, books full of peculiar symbols, books with nothing in them at all, piles of spell books, etc.]-
-Broomsticks [Firebolt, Nimbus 2000, etc.]-
-Cauldrons [Brass, copper, gold, pewter, silver].-
-Snarled claws.-
-Dragon liver.-
-Strings of fangs.-
-Bundles of feathers.-
-Globes of the moon.-
-Gobstones made of solid gold.-
-Jars of herbs.-
-Ice cream [Chocolate and rasberry with chopped nuts, sundaes {free on the half-hour}, strawberry and peanut butter, etc.]-
-Ink that changes color as you write.-
-Lunascope.-
-Perfect, moving model of the galaxy in a glass ball.-
-Rolls of parchment.-
-Potion bottles.-
-Bright powders.-
-Quills.-
-Rat tonic.-
-Robes [Hogwarts school robes, Chudley Cannons robes, spangled, self-ironing, beautifying, slimming, fattening, lengthening, temperature-adjusting, plain {free frog-skin belt with every purchase}].-
-Dried roots.-
-Scales for weighing potion ingredients.-
-Strange, silver scientific instruments.-
-Telescopes [Including collapsible brass].-
-Silver unicorn horns.-
-Wands.-
Near Gringotts is a sidestreet called Knockturn Alley where are to be found shops dealing with the Dark Arts.
