You can't miss it, right in the beautiful historic center of Middelburg. Here, the imposing Abbey Tower de Lange Jan rises proudly above the many monuments in Middelburg. You should not miss the climb. It takes a bit of climbing, 207 steps to be precise, but the view is worth this effort. The tower of the Lange Jan is 90.5 meters long (belongs to the top 10 tallest towers in the Netherlands). On clear days you can even see the surrounding Zeeland islands from the Lange Jan. http://www.langejanmiddelburg.nl/

The biggest branch of the world-famous Hermitage in Saint Petersburg can be found in Amsterdam. Discover top works from the Russian collection in changing exhibitions. The museum was established in the Amstelhof, a monumental building on the Amstel river, in 2009. The art collection of the Hermitage in Saint Petersburg had become so extensive that the museum decided to put a range of works on display in branches. The biggest of these can be found in Amsterdam. The Russian art was initially on display in a small building but the Hermitage in the Amstelhof opened its doors in 2009. Just a year later, the museum welcomed its one millionth visitor. The Hermitage is one of the top attractions in Amsterdam. https://www.holland.com/global/tourism/destinations/amsterdam/museums/hermitage-amsterdam-3.htm

The first buildings to be built in Friesland using natural stone or bricks were stone refuge towers, known in Friesland as ‘stinzen’. ‘Stins’ means stone. These squat towers with rounded peaks served as a refuge for their owners, the farming gentry. These people were the rural aristocracy in Friesland, which had no earls or counts before 1500. http://www.leeuwardenholland.nl/en/

Saint Peter’s Fortress was built on St. Peter’s Mount in the early 18th century. It’s initial purpose was military, allowing the people of Maastricht to defend the city from the French. While successful for a long time, the city had to surrender in the end. https://www.holland.com/global/tourism/destinations/maastricht/fort-st-pieter.htm

You'll find an indoor market hall in various world-class cities, but the combination with luxury housing makes Rotterdam's Markthal the first of its kind. The apartments are draped over the food market in a horseshoe configuration. https://en.rotterdam.info/locations/de-markthal/