The structure at the top of the hill is the Guardian's House.  From there the iconic shots of the site are taken.

The buildings along the edge of the agricultural area are believed to have been used a warehouses and homes.

Wayna Picchu or "Young Mountain" - According to local guides, the top of the mountain was the residence for the high priest

When these lamas decide to move it's best to stay out of their way.

The terraces and walls are perfectly built to face the constant challenge of gravity, water pressure and earth quakes.

Temple of the Sun

Below the Temple of the Sun is Mother Earth's Temple or Royal Tomb whose use is still not well understood.

While all were looking at the adjoining rooms to the Temple of the Sun, this little guy was checking out the tourists.

The main square separating the upper and lower parts of the city

It is believed that construction of the city was started around 1450 AD, just before Columbus landed in America.

On the right is the Three Doorways' Compound, a collection of living quarters.

The site was closing in an hour so I took the opportunity to climb up to the Guardian's  House and get my iconic shot.

I made it!  It wasn't a particularly long hike but after climbing up and down the site all afternoon my legs were complaining.  I wish I had my tripod but was concerned about not being able to bring it in.  I did however bring my mono-pod which doubled as a walking stick.

A remarkable sight.

The morning hike found us in clouds and rain.

The main square.

It was very doubtful that the clouds would break before we had to leave

Taking shelter from the rain while waiting for our party to get moving.

The Kallanka - Machu Picchu's largest room.  It's use is unknown

Stairway leading up to the Three Doorway's Compound.

The Guardian's House in the fog.

The clouds were starting to break up but not in time for us.

The crowds waiting to catch the bus up to Machu Picchu. Our guide said he's never seen the line this long. Best advice for photographing the site.....stay at the hotel at the site.  Best times to shoot are first thing in the morning and just before closing when it less crowded. I would spend two nights there to lessen the impact of bad weather.

Our train had stopped to allow an oncoming train to pass.  While we were there this woman was trying to sell us flowers.  Unfortunately she couldn't get on the train.   No sale today.