Here is a concise summary of the text:
**Title:** A Traveler's Experience in Greece
**Summary:**
* The author visits Greece, starting in Thessaloniki, where they encounter graffiti and historical sites like Aristotle's Square and the Basilica of St. Demetrius.
* They attempt to climb Mount Olympus, facing challenges and ultimately only reaching a transit point (2100m) due to lack of equipment.
* The author shares a personal anecdote about persevering to achieve a fitness goal, inspired by a World of Tanks prompt.
* The trip continues with visits to:
+ Meteora, with its rock formations and monasteries.
+ Corfu (Kerkyra), a charming island with narrow streets and Italian-like architecture, where they indulge in local cuisine.
+ Athens, which leaves a mixed impression: from the city's current state of decay to its rich historical heritage (Acropolis, Amphitheater of Dionysus, National Museum, and the Panathinaikos stadium, site of the first modern Olympic Games).
* The author concludes that Greece left them with a double impression: sadness for its lost greatness, yet admiration for its contrasts and contributions to humanity.
Here are the extracted key facts, each with a number and in short sentences, excluding opinions:
**Travel and Locations**
1. The narrator's first destination in Greece was Thessaloniki.
2. The narrator visited Aristotle's Square in Thessaloniki.
3. The narrator saw the Basilica of St. Demetrius and the White Tower in Thessaloniki.
4. The White Tower was formerly a defensive structure, then a prison, and now a museum.
5. The narrator climbed Mount Olympus, which took approximately four hours to ascend.
6. The peak of Mount Olympus is at an altitude of over 2,100 meters, but the narrator stopped at a transit point.
7. The narrator visited the city of Kalambaka.
8. The narrator traveled to the island of Corfu (also known as Kerkyra).
9. The island of Corfu is where, according to legend, the Argonauts hid and Odysseus visited.
10. The narrator visited Athens, including the Acropolis and the Theater of Dionysus.
**History and Culture**
11. The Acropolis in Athens still stands with a dilapidated prop.
12. An olive tree, said to have been given by Athena to the people, grows behind the Acropolis.
13. The Theater of Dionysus in Athens is one of the oldest in Greece.
14. In ancient Greece, spectators were paid to attend theater performances.
15. The Greek warrior ceremony at the Tomb of the Unknown Soldier is a sacred ritual.
**Miscellaneous**
16. Linkin Park named one of their albums after the Meteora region in Greece.
17. The Meteora region is known for its rock formations and monasteries.
18. The first modern Olympic Games were held at the Panathinaikos Stadium in Athens.
19. In ancient Olympic Games, Greek athletes competed naked, with some exceptions for modesty.