When we want to express that something or someone has the same qualities as something or someone else, for example Paul is as tall as John, the most common way to express this in Spanish is to use tan ... como.
See Using tan ... como = as ... as (comparatives with adjectives and adverbs)
But there is another way to express this.
With adjectives
Mi pueblo es igual de bonito que el tuyo.My town is as nice as yours.
Su hija es igual de alta que Carmen.Her daughter is as tall as Carmen.
Los padres de Javier son igual de estrictos que sus abuelos.Javier's parents are as strict as his grandparents.
Las fiestas de Sevilla son igual de divertidas que las fiestas de Cádiz.Festivities in Seville are as fun as festivities in Cádiz.
Note: as always, adjectives need to agree in number and gender with the noun they refer to. However "igual de" is invariable.
Important:
When we are comparing two people/animals/things with each other, and we use the plural as the subject, we don't need to add "que". For example:
Ese gato es igual de lindo que el otro gato.That cat is as cute as the other cat.
Esos dos gatos son igual de lindos.Those two cats are as cute as each other.
With adverbs
Mi jefe trabaja igual de duro que sus empleados.My boss works as hard as his employees.
Marisa baila igual de bien que Carlota.Marisa dances as well as Carlota.
Mi abuela sabe coser igual de maravillosamente que cuando era joven.My grandma knows how to sew as beautifully as when she was young.
See also:
Using tanto como with verbs and nouns to say as much/many ... as (comparatives) and
Using tan ... como = as ... as (comparatives with adjectives and adverbs)Ese gato es igual de lindo que el otro gato.That cat is as cute as the other cat. Mi jefe trabaja igual de duro que sus empleados.My boss works as hard as his employees. Esos dos gatos son igual de lindos.Those two cats are as cute as each other. Las fiestas de Sevilla son igual de divertidas que las fiestas de Cádiz.Festivities in Seville are as fun as festivities in Cádiz. Mi abuela sabe coser igual de maravillosamente que cuando era joven.My grandma knows how to sew as beautifully as when she was young. Su hija es igual de alta que Carmen.Her daughter is as tall as Carmen. Los padres de Javier son igual de estrictos que sus abuelos.Javier's parents are as strict as his grandparents. Mi pueblo es igual de bonito que el tuyo.My town is as nice as yours. Marisa baila igual de bien que Carlota.Marisa dances as well as Carlota. 
