Short answers, pulled from the story.
Rossøya island in Norway becomes the northernmost point at 81 degrees north. Cape Fligely sits at 81 degrees 48 minutes north on Rudolf Island, part of the Franz Josef Land archipelago.
Gavdos Island off Greece marks the southernmost point at 34 degrees 48 minutes north with Cape Trypiti. Cyprus lies further south but belongs to Asia geographically despite its EU membership.
The easternmost mainland point lies on an unnamed peak near Gora Anoraga visible on Soviet General Staff maps. That peak sits northeast of another named summit and southwest of Ostrov Lediyev island in Arctic waters south of the Kara Sea.
The Kola Superdeep Borehole in Russia descends 12,262 metres into Earth's crust holding the record for deepest artificial point on the planet. Krubera Cave in Georgia plunges 2,196 metres underground making it the deepest cave globally.
Jungfraujoch train station sits at 3,454 metres as a dead-end line. Klein Matterhorn cable car in Switzerland reaches 3,883 metres elevation while Mittelallalin funicular climbs to 3,456 metres.