Located near Utrecht, De Haar Castle stands as the largest and most opulent castle in the Netherlands, ranking among Europe's iconic historic residences. Visit this castle to get a glimpse into its glorious past and the breathtaking grandeur that enveloped the international elite in the early 20th century. The castle is also a rare example of a medieval fortress, complete with towers, ramparts, canals, gates and drawbridges.

Istiqlal Mosque is Indonesia’s largest mosque, with space for more than 10,000 worshippers. Completed in 1978 and designed by Frederic Silaban, the building combines modern lines with traditional Islamic design. Visitors can admire the soaring dome and towering minaret, and explore the spacious prayer hall outside of prayer times.

This railway museum is a captivating site that promises to take you through 175 years of Dutch railway history. It features a lifelike station, engaging exhibitions, thrilling attractions, and a theatre, all conveniently accessible by train. The restored 19th-century Maliebaan station serves as the entrance to a fascinating world of trains. If you visit the museum with kids, there's an outdoor playground, featuring the Jumbo Express, a small train, which provides a delightful journey through the Railway Museum's hidden corners. Also, The Fire Trial, an award-winning 4D simulation allows participants to take the reins of a train and experience the thrill of driving it themselves.

The exposition of the Steamboat Art Museum may appear modest by international standards, but the compact museum is certainly your best bet if art of Northern Colorado is something you would be interested in learning more about. Exhibitions are renewed frequently.