[2019] You can take all Obelisk bounties from the Tower Obelisk, after you finished repairing the 4 links.

You can also pick up the Timelost Weapon Bounties from all four Obelisks from here too.

Edit: I forgot to mention, but you can also manage your Sundial Links from here, including resetting and linking Obelisk links to customize Sundial rewards!