Hôtel Van Eetvelde
While the outside of this building is unusual, the interior is another Horta masterpiece (1895-1901). It was commissioned by Baron Van Eetvelde, Minister for the Congo at that time and the country's highest-paid civil servant. Exotic timbers stud the interior, and there's a central glass dome infused with African-inspired plant motifs. Admission is limited to ARAU tours.