It is about 1H away from Amsterdam, and has nice museums. I took a day train there, which allows bikes:

It had nice fall colors when I arrived:

While there, over 2 different days, I only had enough time to see one museum each day:

On the 2nd day, I was also able to see my cousin Frank and his family who lived nearby. It had been 13 years since I last went to their house right after they moved in, so it was nice to go back and see them there:

After that, I biked back to the nearest train station back to Amsterdam:

I was in Amsterdam for 5 days for Amsterdam Dance Event, which had parties every night, late into the early mornings. This is what I saw:

they had stores selling everything you needed for partying :)

As a result, I didn't have much time for sightseeing, but I still did a bit during the afternoon.
Close to my crap but well located hotel, was the body worlds exhibition, which was worth the visit:

Saw a church that was closed the last times I went:

The next 2 days, I went to Den Hagg for a few hours, including:

There is a lot more to see there, so I'll have to go back.

While it was not super convenient, I was able to get my museum kaart sent to my hotel before I arrived, it gave me free entrance to a few museums:

The last day, I had time in Amsterdam, and went to the Royal Palace that was closed during my last visit:

then, I went back to the new church, which had a different exposition than a few months ago:

A few other random pictures:

And that was it for Amsterdam, not a huge lot given that most of the time was spent partying at night and sleeping to recover :)

While in Prague, I took 2/3rd of a day to go to Kutna Hora and its famous Sedlec Ossuary.

I got up a bit too late for the direct train, so I took a cab directly to the Bohemian Museum of Silver that has an underground tour you have to sign up for (early, as it books out): [rigo img:1024:104*]

I got a private english tour in the mine

pump that was getting things out

it was tight in places

Then, I went to St Barbara cathedral:

Nearby was the Stone House, Museum of Silver, which ended up being very skippable, but I found a nice little cat on the way that adopted me for a little bit :)

the stone house required a guided tour with a guide who didn't speak english and gave me a pamphlet to read

I then took single uber in town to get to Sedlec Ossuary, which was farther than I wanted to walk. It's a very interesting church where they displayed the bones and skelettons of people buried there, making interesting displays:

I then had just 10mn or so to look town before going to the train station for a train back to town:

The direct train back to Prague is 1H if you catch it at the right time (it's not every hour):

Frankfurt is honestly not a city that is anywhere close to the top of of German cities to visit, but the downtown is worth a few hours, and if you have more time, I'm assuming some of the museums are worth seeing. In my case, I had a bit less than 3H, so I just went for the easy sights:

I went to the financial district to visit the google office that was there. Nice views from there:

the cathedral had a small museum attached to it

I then went in the Römer Square area to see Old St Nicholas and frankfurt cathedral (that were severely impacted by the allied bombings during WWII, while the rest of the city was mostly leveled):

Römer Square was clearly built for tourists, and it is picturesque:

I then went to the bridge that has a nice view:

some electric autonomous bus prototype

of course, put locks on the bridge

Then, back to town to burn a bit more time:

Then it was time to go back to the airport for the terrible security line and treatment that was way worse than I was ready for, and onto my next flight to Prague. Frankfurt is of course worth more than 3H if you have the time to see museums, but it felt like it was more than enough for a visit:

Day 1

the trams are cheap, frequent, and go most places you need

jewish quarter

the controvertial TV tower

figurines that rotate on the outside of the astronomical clock

underground the old city tower

After the first tour, I went to the 2nd city tour towards new town and the castle:

stores sell all kinds of things :)

castle gate

the town also has a good subway

Day 2

And not too far away is the local science museum: Narodni Technicke Museum (on its own page):

After the 2 museums, I went to a viewing tower by Charle's bridge for sunset pictures:

Day 3

Wen I got back, I had enough time to go to the Museum of Communism which describes how communism was not a net win for the country:

Next in the museums that close late, I went to the Prague Apple Museum, which may have the best collection of Apple hardware outside of California, where there isn't a public museum:

Last for that evening, was the sex machines museum, which had a decent collection:

Day 4

one of the tickets was to be able to take pictures, but for $2, that was fine enough for me

Nice view from the top of the church:

new church, close to the castle

The castle also had nice gardens:

After the castle, I did a quick visit to the local Google Office

From there, I did a quick visit of Petrin Tower, a bit rushed but better than nothing. Nice views from the top of course:

After the invisible museum I went to visit on a guided tour in english, which you visit in complete darkness with a blind guide, I went to a couple of optical illusion museums:

As well as the lego museum:

nice to see the car my dad bought when we were kids

Day 5

Got back to the main train station and finished the science museum I wasn't able to finish on my first visit, and went to spend a bit mor time in town:

Day 6

And that was it for Prague. Great city, got to see most of it, although not all since I was getting up past noon due to the night parties. would be fun to go back.