Exit customs and take Aeroexpress to Belorussky station (35–40 min) then metro or taxi to your accommodation; gives quick, safe, public transport access to central Moscow.
Visit Red Square, St. Basil's exterior and enter the Kremlin complex (ticketed); book Kremlin tickets in advance. Kremlin opening: 10:00–17:00 (closed Thu).
Historic town with Kolomna Kremlin and local confectionery museum; elektrichka from Kursky station ~1.5–2h. Alternatively choose Izmailovo Kremlin (metro VDNKh/Partizanskaya) for a short city option.
Take Aeroexpress from Belorussky station to Sheremetyevo (allow time for check-in and security for 12:40 flight). Aeroexpress journey ~35–40 min; depart hotel accordingly.