It took us 20 mins to walk into Delft, trying to keep in the shade and dodge all the bikes. We finally managed to find the tourist office - 'Oh, you have one of the old maps'........ We bought a combi ticket for entrance to several attractions, valid for a year, so we could spread this over 2 days and not get 'museum-ed out'
First stop was the New Church, right on the market square. It's not actually that new - the first stones were laid in 1393! They kept on adding bits to it up tothe 16thC.   Unfortunately the big city fire of 1536 destroyed the organ,clock and stained glass windows and part of the tower, and the roof fell in.   Then in the 1560's during the Iconoclasm in the Netherlands, all things Roman Catholic were destroyed.  Then in 1654 the Delft Thunderclap finished the job - the gunpowder depot, holding 90,000lbs of gunpowder exploded!   This blew apart the walls and new roof and smashed any remaining glass. A large part of the city of Delft was destroyed. The rebuilding of the church started almost immediately, ending up with the Church largely as it is today.
This church has 2 very special treasures.

Willem van Nassau or William of Orange is the Father of the Fatherland - the Netherlands.  
Our William of Orange, married to Mary, was the Dutch William the 3rd  

Willem van Nassau has a huge mauseleum in the New Church in Delft, which is a sort of national shrine.   He was a strong advocate of equality, fraternity and freedom of worship, values that still underpin Dutch society today. He was murdered in the Prinsenhof in Delft.
Following on from his mauseleum in Delft, most members of the Dutch Royal family have been interred in the Royal Crypt in Delft since then. The Crypyt has been expanded several times,most recently in 1923.
The entrance to the crypt is covered by an enormous stone. It is not open to the public and very few people have been inside. The mayor of Delft holds the keys, but even he is only allowed inside under royal supervision. The video is of the former Queen's husband's funeral
The church follows the Calvinist religion, and all the pews face the pulpit - there is no obvious altar.  
Our next port of call was the Vermeer Centre.   The painter is Delft's most famous son, although little is known about him, except that he had 15 children and died in debt.
There are no original paintings there, but the centre explains his fantastic use of light and colour pigments.
They give you a 'Vermeer town walk' to follow, but there is very little left of the Delft that vermeer knew - the Thunderclap put paid to most of that!

After lunch we had a stroll along the canals and then visited the Old Church aka the leaning tower of Delft.   A canal was filled in to make room for this church,in 1325 . The tower began to subside during construction, but it was stabilised and the final bit was built 'straight up' so the tower has a kink!    It has been leaning for over 650 yrs , but is carefully monitored.
We liked Delft, it is bigger, busier and more touristy than Alkmaar, but has more museums and historic monuments.     
The walk back to the campsite seemed to take a looooong time - we were so hot and tired. We later found out that the temp in Delft was 34 deg!!!