Highest you've been in a building/structure

[Roadgeekteen]

The hut at the top of Mt. Whitney, 14,505 feet elevation.

With that criteria, the visitor center on Mauna Kea in Hawaii for me.

[Buck87]

The empire state building. Don't remember what floor I got to.

If it was a large rectangular area with an outdoor viewing platform you were on the 86th floor
If it was a small indoor cylindrical area you were on the 102nd floor   

[Hurricane Rex]

I removed my message about Logan Pass and for anyone else that made a similar comment on highest total elevation with a structure, I've created a thread for that purpose although its total elevation in general. https://www.aaroads.com/forum/index.php?topic=22079.0

[kphoger]

The hut at the top of Mt. Whitney, 14,505 feet elevation.

With that criteria, the visitor center on Mauna Kea in Hawaii for me.

Height off the ground, not total elevation.

Yeah, no kidding.  ↓↓  As mentioned in the OP.  ↓↓  Always read the OP, people...

off the ground

[kkt]

Okay, Empire State Building 102nd floor.

[Roadgeekteen]

The hut at the top of Mt. Whitney, 14,505 feet elevation.

With that criteria, the visitor center on Mauna Kea in Hawaii for me.

Height off the ground, not total elevation.

Yeah, no kidding.  ↓↓  As mentioned in the OP.  ↓↓  Always read the OP, people...

off the ground

I saw the op, just wanted to give some additional information about the highest that I have been. (Not high on drugs)

[dvferyance]

Hancock Building in Chicago on the 94th floor.