First,Gulliver went to Lilliput, where he met a bunch of tiny people. They tried to gouge out his eyes so he had to leave.
A little while later, Gulliver found himself in Brobdingnag, the land of the giants. He fist chilled with a rural family until he was sold...
...To the king. He lived there until he was carried off by a bird.
His next voyage took him to Laputa, a floating island full of people so wrapped up in their thoughts that they need people to follow them around and snap them out of their thoughts.
He got bored in Laputa so he returned to a city below called Lagado, he was surprised by how underdeveloped it was. The people seemed to avoid anything that was practical in anyway and pursue pointless experiments.
In his last trip, Gulliver was marooned on the land of the Houyhnhnms, a land of intelligent horses who control a completely wild and non-intelligent breed of humans called Yahoos. Gulliver is disgusted by these creatures and struggles with it on his return home