Athens by Locals - Ideas for an extended visit using ONLY public transport (bus, metro and trains) 

Here is a list of ideas in the vicinity of Athens for those planning an extended visit to do only with Athens' integrated transport network.
Chapters
0:37 Public Transportation
1:32 Mycenaean Tomb of Acharnes
2:04 Piraeus
2:59 Eleusis
3:45 Sanctuary of Egyptian Gods
4:16 Sanctuary of Artemis in Vravrona
4:40 Mount Himeto or Ymittos
5:22 Mount Parnes or Parnissa
5:52 Marathon Dam
6:27 Stavros Niarchos Park
6:59 Ellinikon Park
7:16 Olympic Stadium Park
7:39 Beaches
Public Transport Price List: www.oasa.gr/en/tickets/prices...
Mycenaean Tomb of Acharnes:
Location: maps.app.goo.gl/daau1qZtYJpdd...
How to get there: Train (Kato Acharnai Station) and walk
Piraeus:
How to get there: Train (Piraeus Station)-Metro-Buses
Long walls (Makra tichi):
• Las murallas largas de...
Eleusis:
Location:
How to get there: Train-Buses
Sacred Path (Iera Odos) - Part 1: • El "camino sagrado" (I...
Holy Path (Iera Odos) - Part 2 (Dafni Monastery): • Monasterio de Dafni - ...
Sanctuary of the Egyptian Gods:
• El templo de los diose...
Location: maps.app.goo.gl/W3vAYqj1CGwBs...
How to get there: Metro 3 + Bus 314
Shrine of Artemis in Vravrona:
Location: maps.app.goo.gl/KVroU2jHdXZUc...
How to get there: Metro 3 + Bus 304
Walks and Hiking:
Mount Hymettus (Ymittos):
How to get there: Bus 224
Kesariani: maps.app.goo.gl/bAjAZSBxHpzmv...
Nympholepto Cave: • La cueva del Ninfolept...
Drakospiti or House of the Dragon: • La Drakospiti de Ymitt...
Mount Parnes (Parnitha):
Casino Location: maps.app.goo.gl/M584PuD2ohfvm...
How to get there: Bus
Stavros Niarchos:
Location: maps.app.goo.gl/P676RTjoP5k49...
How to get there: Bus
Ellinikon Park:
Location: maps.app.goo.gl/QCr8qYc1oGD6a...
How to get there: Metro M2 - Elliniko Station
Olympic Stadium:
Location: maps.app.goo.gl/FJ9HVD92kq19G...
How to get there: Metro M1 - Irene Station
Music:
Dreams:
Music by www.bensound.com/free-music-f...
License code: JOSKEOWH6PBNSDAV
Adventure:
Music by Bensound.com/free-music-for-videos
License code: N2TAUWD5ODEJWTX8
Piano Moment:
Music: bensound.com
License code: NRDYJXZKVSVTTBH9