Unable to answer "Are there traffic signals that show when to cross here?" – Crossing – node/4807422326 via StreetComplete 62.2:

There is no crossing here, there are entrances to underground garages

In context of overlay "Buildings" – Building – way/283125209 via StreetComplete 62.2:

It is a garage for SAMUR ambulances

There is a path here, it has diamond shape holes with grass inside

via StreetComplete 62.2

GPS Trace: @IzaRod/traces/12177234

There is a path here, it has diamond shape bricks with grass inside

via StreetComplete 62.2

GPS Trace: @IzaRod/traces/12177233

In context of overlay "Places" – Barco Solar el Retiro (Boat Rental) – node/9872610414 via StreetComplete 62.2:

The solar boat is now in the monument (left of the blue boats)