The video shows a first-person view of a player in a game of Minecraft. The player is building a structure using cobblestone blocks. The player places the blocks in a vertical line, then adds a horizontal block on top to create a flat surface. The player then places another block on top of the horizontal block to create a second level. The player continues to build upwards, adding more blocks to create a tall, narrow structure. The player then places a fence on top of the structure to complete the build. The structure appears to be a tall, narrow tower with a fence on top. The player's inventory is visible at the bottom of the screen, showing the different types of blocks available for use.