Mysteries of the Abandoned
Documentary
April 20, 2017 – March 25, 2026
(began 9 years ago)
42m / episode
7.3/10
Returning Series
13 Seasons
140 Episodes
HBO MaxDocumentary series investigating why some of the world's most advanced architectural achievements were abandoned.
Key Crew
Season 1
6 episodes
April 20, 2017
Season 2
8 episodes
March 20, 2018
Season 3
10 episodes
October 2, 2018
Season 4
9 episodes
April 4, 2019
Season 5
8 episodes
October 3, 2019
Season 6
11 episodes
March 26, 2020
Season 7
11 episodes
December 3, 2020
Season 8
11 episodes
May 20, 2021
Season 9
22 episodes
January 2, 2022
Season 10
16 episodes
June 7, 2023
Season 11
8 episodes
September 4, 2024
S1
Season 12
8 episodes
August 13, 2025
S1
Season 13
12 episodes
February 11, 2026
Cast (17)
Original Language
en
Spoken Languages
English
Production Countries
US
Production Companies
Travel Channel, Science Channel, Procter & Gamble Productions, Like A Shot Entertainment