6 Incredible Airport Runways

I guess they have never been to Lukla (Tenzing-Hilary).

Where are Barra (Scotland) St Barths (20 min from St Maartin) and Saba? All should have made the list. All accept commercial (non jet) flights

I would suggest Paro, Bhutan, but it's not the airport that's incredible, it's the approach.

Funchal airport Madeira island,owned by Portugal, off the coast of Morroco. Need special training because of the xwind coming off of the mountain. Was lengthened by use of large piers.

Re: #1, what are "water runways" and how do they have a length in the ocean?

Re: #2, it's not the runway that has to close when an aircraft lands or takes off, it's the road that is closed.

Re: #3, what are "international local regulations"?

For someone who has never been to St Maarten (yet), what do they mean when they say there's now a 150 meter safety extension? Did they close off the beaches leading up to the runway or something? I thought there was also a road just outside the gate as well, so I'd be curious to understand what that means.